Added help command. Usage `pod help [COMMAND]`
refactored a bit, made it more explicit
updated a spec
updated changelog
Merge pull request #957 from CocoaPods/help

Added help command. Usage `pod help [COMMAND]`
Include ruby profiler
[SourcesManager] Improve search performance
[TargetIntegrator] Robustness against target with missing file references

Closes #938
[Installer] Run the hooks of all the specs (not of the installed ones
only)

Closes #953
[Rakefile] Set git user on Travis
[Rakefile] Set git user on Travis 2
[SourceManagers] Fix CocoaPods spelling

See #933
[Fix] Do not quote `$(inherited)`. Fixes #956.
Don't initialize Spec::Set::Statistics if not needed

See #919
More autoload #see 919
Fix Xcodeproj autoload
[TargetIntegrator] Robustness against target with missing file references

Closes #938
Changelog [ci skip]
Require Core 0.18.1
[Changelog]