rename Resources section to External Links, standardize headings

README.md

@@ -683,18 +683,33 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
 * [Traefik](https://traefik.io/) - Traefik is a leading modern reverse proxy and load balancer.
 * [Varnish](https://www.varnish-cache.org/) - HTTP based web application accelerator focusing on optimizing caching and compression.
 
-# Resources
+-------------------
+
+## List of Licenses
+
+- `AGPL-3.0` - [GNU Affero General Public License 3.0](https://www.gnu.org/licenses/agpl-3.0)
+- `Apache-2.0` - [Apache, Version 2.0](https://www.apache.org/licenses/)
+- `BSD-2-Clause` - [BSD 2-clause "Simplified"](https://opensource.org/licenses/BSD-2-Clause)
+- `BSD-3-Clause` - [BSD 3-Clause "New" or "Revised"](https://opensource.org/licenses/BSD-3-Clause)
+- `GPL-2.0` - [GNU General Public License 2.0](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)
+- `GPL-3.0` - [GNU General Public License 3.0](https://www.gnu.org/licenses/gpl-3.0.en.html)
+- `MIT` - [MIT License](https://opensource.org/licenses/MIT)
+- `MPL-2.0` - [Mozilla Public License](https://www.mozilla.org/MPL/2.0/index.txt)
+
+-------------------
+
+## External links
 
 Various resources, such as books, websites and articles, for improving your skills and knowledge.
 
-### Blogs
+## Blogs
 
 * [Code as Craft](https://codeascraft.com/) - Etsy's Ops blog, lots of technical posts.
 * [DevOpsGuys](http://blog.devopsguys.com/) - Devops consultants who blog about operations.
 * [Rackspace Developers](https://developer.rackspace.com/blog/) - Slightly biased blog with lots of Devops Topics.
 * [RoseHosting Blog](https://www.rosehosting.com/blog/) - Linux tutorials for installing and configuring various software through the Linux command line. Guides and introductions to different Linux technologies and applications. Tips and tricks you can do via the Linux command line and more.
 
-### Books
+## Books
 
 *Sysadmin related books.*
 
@@ -705,7 +720,7 @@ Various resources, such as books, websites and articles, for improving your skil
 * [The Visible Ops Handbook: Implementing ITIL in 4 Practical and Auditable Steps](http://www.itpi.org/the-visible-ops-handbook-review.html) - Is a methodology designed to jumpstart implementation of controls and process improvement.
 * UNIX and Linux System Administration Handbook (ISBN-13: 978-0131480056) - Approaches system administration from a practical perspective.
 
-### Communities / Forums
+## Communities / Forums
 
 *For the social people.*
 
@@ -718,44 +733,23 @@ Various resources, such as books, websites and articles, for improving your skil
 * [StackExchange Network](https://stackexchange.com/sites#technology) – Q&A communities.
   * [Server Fault](https://serverfault.com/) – StackExchange community for system and network administrators.
 
-### Newsletters
+## Newsletters
 
 * [Servers for Hackers](https://serversforhackers.com/) - Newsletter for programmers who find themselves needing to know their way around a server.
 * [Web Operations Weekly](http://webopsweekly.com/) - A weekly newsletter on Web operations, infrastructure, performance, and tooling, from the browser down to the metal.
 
-### Repositories
+## Repositories
 
 *Software package repositories.*
 
 * [AlternativeTo](http://alternativeto.net) - Find alternatives to software you know and discover new software.
-
-### Repositories - Debian-based distributions
-
 * [deb.sury.org](https://deb.sury.org/) - Repository with LAMP updated packages for Debian and Ubuntu.
-
-### Repositories - RPM-based distributions
-
 * [ElRepo](http://elrepo.org/tiki/tiki-index.php) - Community Repo for Enterprise Linux (RHEL, CentOS, etc).
 * [EPEL](https://fedoraproject.org/wiki/EPEL) - Repository for RHEL and compatibles (CentOS, Scientific Linux).
 * [IUS](https://ius.io/) - Community project that provides RPM packages for newer versions of select software for Enterprise Linux distributions.
 * [Remi](http://rpms.famillecollet.com/) - Repository with LAMP updated packages for RHEL/Centos/Fedora.
 * [Software Collections](https://www.softwarecollections.org) - Community Release of [Red Hat Software Collections](https://access.redhat.com/documentation/en/red-hat-software-collections/). Provides updated packages of Ruby, Python, etc. for CentOS/Scientific Linux 6.x.
 
--------------------
-
-## List of Licenses
-
-- `AGPL-3.0` - [GNU Affero General Public License 3.0](https://www.gnu.org/licenses/agpl-3.0)
-- `Apache-2.0` - [Apache, Version 2.0](https://www.apache.org/licenses/)
-- `BSD-2-Clause` - [BSD 2-clause "Simplified"](https://opensource.org/licenses/BSD-2-Clause)
-- `BSD-3-Clause` - [BSD 3-Clause "New" or "Revised"](https://opensource.org/licenses/BSD-3-Clause)
-- `GPL-2.0` - [GNU General Public License 2.0](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)
-- `GPL-3.0` - [GNU General Public License 3.0](https://www.gnu.org/licenses/gpl-3.0.en.html)
-- `MIT` - [MIT License](https://opensource.org/licenses/MIT)
-- `MPL-2.0` - [Mozilla Public License](https://www.mozilla.org/MPL/2.0/index.txt)
-
--------------------
-
 ## Websites
 
 *Useful sysadmin related websites.*
@@ -771,6 +765,8 @@ Various resources, such as books, websites and articles, for improving your skil
 * [ArchWiki](https://wiki.archlinux.org/) – Arch Linux Wiki which has really nice written articles valid for other distros.
 * [Gentoo Wiki](https://wiki.gentoo.org/) - Gentoo Linux Wiki with a lot in-detail description of Linux components.
 
+------------------
+
 ## License
 
 ![cc license](http://i.creativecommons.org/l/by-sa/4.0/88x31.png)