Expand the path when creating new projects

Fixes an issue where if you supplied a relative path when creating a
project, all of the relative references from that point on were
incorrect. By expanding the path on project creation, we ensure that
we're always setting the path the proper way.

Fixes #121
Add note about path expansion to documentation
Bumping last known Xcode version to 5.1
Merge pull request #138 from coverback/master

Bumping last known Xcode version to 5.1
Remove empty OTHER_LDFLAGS setting

Setting this to a blank value doesn't match Xcode's behavior, which is
to not set it at all.
Merge pull request #140 from CocoaPods/gf-other-ldflags

Remove empty OTHER_LDFLAGS setting
Merge pull request #124 from CocoaPods/gf-relative-project

Expand the path when creating new projects
[Readme] Fix badges
[Travis] Run on 1.8.7 & 2.0.0
[Constants] Bump lask know sdks versions
[Changelog] Update
[Rakefile] Print platform in ext:precompile task
[Extension] Disable deprecation warnings
[Rakefile] Prettify output and perform version question as last check on release task
[Extension] Allow pre-compilation of extensions with Xcode 5.1

I'm not sure if this is the best way to go, but for the moment it
appears to be working.

closes #137
[Gemfile] Use development dependencies from rubygems
[Bundle] Update
Release 0.15.0
[Gemspec] Remove rake from the dependencies
[Gemfile] Add version requirements to rake for Ruby 1.8.7