Added link to github repo in pod

Changes

@@ -5,6 +5,7 @@ Revision history for Perl module TestRail::API
     - Reformatted this file as per CPAN::Changes::Spec
     - Added "use 5.010" to the module, to match min perl in metadata
     - Made URL in SEE ALSO a hyperlink with L<...>
+    - Added link to github repo in pod
 
 0.009 2014-11-28 TEODESIAN
     - Oops, forgot my Test deps

lib/TestRail/API.pm

@@ -1454,6 +1454,10 @@ L<JSON::XS>
 
 L<http://docs.gurock.com/testrail-api2/start>
 
+=head1 REPOSITORY
+
+L<https://github.com/teodesian/TestRail-Perl>
+
 =head1 AUTHOR
 
 George Baugh <teodesian@cpan.org>