Merge branch 'master' of https://github.com/mruby/mruby

doc/mrbgems/README.md

@@ -27,6 +27,10 @@ A remote GIT repository location for a GEM is also supported:
 conf.gem :git => 'https://github.com/masuidrive/mrbgems-example.git', :branch => 'master'
 ```
 
+```
+conf.gem :github => 'masuidrive/mrbgems-example', :branch => 'master'
+```
+
 
 ## GEM Structure
 

tasks/mruby_build.rake

@@ -67,6 +67,10 @@ module MRuby
     end
 
     def load_external_gem(params)
+      if params[:github]
+        params[:git] = "git@github.com:#{params[:github]}.git"
+      end
+
       if params[:git]
         url = params[:git]
         gemdir = "build/mrbgems/#{url.match(/([-_\w]+)(\.[-_\w]+|)$/).to_a[1]}"