Add postgres database driver

Signed-off-by: Nikos Filippakis <me@nfil.dev>

go.mod

@@ -23,6 +23,7 @@ require (
 	github.com/json-iterator/go v1.1.9 // indirect
 	github.com/julienschmidt/httprouter v1.2.0 // indirect
 	github.com/kr/pretty v0.1.0 // indirect
+	github.com/lib/pq v1.3.0
 	github.com/matrix-org/dugong v0.0.0-20180820122854-51a565b5666b
 	github.com/matrix-org/gomatrix v0.0.0-20200128155335-9e7906b6766d
 	github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7

go.sum

@@ -62,6 +62,8 @@ github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFB
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/lib/pq v1.3.0 h1:/qkRGz8zljWiDcFvgpwUpwIAPu3r07TDvs3Rws+o/pU=
+github.com/lib/pq v1.3.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/matrix-org/dugong v0.0.0-20180820122854-51a565b5666b h1:xpcmnpfUImRC4O2SAS/dmTcJENDXvGmLUzey76V1R3Q=
 github.com/matrix-org/dugong v0.0.0-20180820122854-51a565b5666b/go.mod h1:NgPCr+UavRGH6n5jmdX8DuqFZ4JiCWIJoZiuhTRLSUg=
 github.com/matrix-org/gomatrix v0.0.0-20200128155335-9e7906b6766d h1:Vf/EQgAfg8/CBUQv9te7UJreZ9iKKouB2gb8UIRM4jQ=

goneb.go

@@ -9,6 +9,7 @@ import (
 	"os"
 	"path/filepath"
 
+	_ "github.com/lib/pq"
 	"github.com/matrix-org/dugong"
 	"github.com/matrix-org/go-neb/api"
 	"github.com/matrix-org/go-neb/api/handlers"