title: CocoaPods mapping values are not allowed
body: <p>I was trying to update a project pods running a command:</p>
  
  <pre><code>pod update
  </code></pre>
  
  <p>But I was always getting the same error:</p>
  
  <pre><code>Psych::SyntaxError - (/Users/vojta/.cocoapods/repos/master/CocoaPods-version.yml): mapping values are not allowed in this context at line 3 column 4
  /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/psych.rb:205:in `parse'
  /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/psych.rb:205:in `parse_stream'
  /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/psych.rb:153:in `parse'
  /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/psych.rb:129:in `load'
  /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/psych.rb:299:in `block in load_file'
  /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/psych.rb:299:in `open'
  /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/psych.rb:299:in `load_file'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/lib/cocoapods/sources_manager.rb:262:in `version_information'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/lib/cocoapods/sources_manager.rb:223:in `repo_compatible?'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/lib/cocoapods/sources_manager.rb:282:in `master_repo_functional?'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/lib/cocoapods/command.rb:39:in `parse'
  /Library/Ruby/Gems/2.0.0/gems/claide-0.5.0/lib/claide/command.rb:243:in `parse'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/lib/cocoapods/command.rb:38:in `parse'
  /Library/Ruby/Gems/2.0.0/gems/claide-0.5.0/lib/claide/command.rb:275:in `run'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/lib/cocoapods/command.rb:54:in `run'
  /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.32.1/bin/pod:33:in `&lt;top (required)&gt;'
  /usr/bin/pod:23:in `load'
  /usr/bin/pod:23:in `&lt;main&gt;'
  ```
  </code></pre>