Silence warning about top level access to class variables in svg-graph gem

For now the fix is in my fork to the gem pending a merge of the PR I sent to
the authors.

Gemfile

@@ -64,7 +64,7 @@ gem 'htmldiff'
 
 # generates SVG Graphs
 # used for statistics on svn repositories
-gem 'svg-graph'
+gem 'svg-graph', github: 'why-el/svg-graph', branch: 'silence-class-access-warning'
 
 gem 'date_validator', '~> 0.7.1'
 gem 'ruby-duration', '~> 3.2.0'

Gemfile.lock

@@ -14,6 +14,13 @@ GIT
       capybara
       rspec
 
+GIT
+  remote: git://github.com/why-el/svg-graph.git
+  revision: 7d7e77ac7adbafac671c26f55e6934f66e737dd3
+  branch: silence-class-access-warning
+  specs:
+    svg-graph (1.0.2)
+
 GIT
   remote: https://github.com/finnlabs/rack-protection.git
   revision: 5a7d1bd2f05ca75faf7909c8cc978732a0080898
@@ -476,7 +483,6 @@ GEM
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
     structured_warnings (0.2.0)
-    svg-graph (1.0.5)
     syck (1.0.5)
     sys-filesystem (1.1.4)
       ffi
@@ -607,7 +613,7 @@ DEPENDENCIES
   shoulda-matchers (~> 2.8)
   simplecov (= 0.8.0.pre)
   sprockets (~> 2.12.3)
-  svg-graph
+  svg-graph!
   syck (~> 1.0.5)
   sys-filesystem (~> 1.1.4)
   thin