[Bundler] Use cocoapods-core's master branch

Gemfile

@@ -15,7 +15,7 @@ gem 'json', '1.7.7'
 
 group :development do
   cp_gem 'claide',               'CLAide'
-  cp_gem 'cocoapods-core',       'Core', 'seg-module-map'
+  cp_gem 'cocoapods-core',       'Core'
   cp_gem 'cocoapods-downloader', 'cocoapods-downloader'
   cp_gem 'cocoapods-plugins',    'cocoapods-plugins'
   cp_gem 'cocoapods-trunk',      'cocoapods-trunk'

Gemfile.lock

@@ -7,8 +7,8 @@ GIT
 
 GIT
   remote: https://github.com/CocoaPods/Core.git
-  revision: 84675265bd37751d1e344275c56d19046624262d
-  branch: seg-module-map
+  revision: 971a8c4aa452726bec255c784714a7a7ebaa55fc
+  branch: master
   specs:
     cocoapods-core (0.36.3)
       activesupport (>= 3.2.15)