chore(build): update gemspec with homepage meta data

Author: dcs3spp

validate-gitlab-ci.gemspec

@@ -1,7 +1,9 @@
 Gem::Specification.new do |s|
     s.name        = 'validate-gitlab-ci'
     s.version     = '0.0.1'
+    s.authors     = [ 'spears' ]
     s.summary     = 'Call GitLab API to validate CI yaml file'
     s.description = 'Call GitLab API to validate CI yaml file'
+    s.homepage    = 'https://gitlab.com/groups/sppears_grp/-/shared'
     s.executables << 'validate-gitlab-ci'
 end