Release 0.6.0
Fix Readme typo
Merge pull request #71 from leberwurstsaft/master

Minor typo fixed in Readme
added schemes property to Workspace (loads all schemes from workspace)
- refactored schemes loading code
- fixed path related bug from previous implementation
added specs for testing schemes related functions
simplified schemes related code in Xcodeproj::Workspace
rewrote specs with native asserts
Merge pull request #72 from dev4dev/master

Return scheme names that exist in a workspace.
[Travis] Try to get Ruby 1.9.3 build to work again.
Merge branch 'master' into xcconfig-prefix

* master:
  [Travis] Try to get Ruby 1.9.3 build to work again.
  rewrote specs with native asserts
  simplified schemes related code in Xcodeproj::Workspace
  added specs for testing schemes related functions
  - refactored schemes loading code - fixed path related bug from previous implementation
  added schemes property to Workspace (loads all schemes from workspace)
  Fix Readme typo
  Release 0.6.0