use rubygems for gitlab_git gem

Gemfile

@@ -23,7 +23,7 @@ gem 'omniauth-github'
 
 # Extracting information from a git repository
 # Provide access to Gitlab::Git library
-gem 'gitlab_git', path: '../gitlab_git'#'~> 1.4.1'
+gem "gitlab_git", "~> 2.0.0.pre"
 
 # Ruby/Rack Git Smart-HTTP Server Handler
 gem 'gitlab-grack', '~> 1.0.1', require: 'grack'

Gemfile.lock

@@ -12,14 +12,6 @@ GIT
   specs:
     raphael-rails (2.1.0)
 
-PATH
-  remote: ../gitlab_git
-  specs:
-    gitlab_git (1.4.1)
-      activesupport (~> 3.2.13)
-      github-linguist (~> 2.3.4)
-      gitlab-grit (~> 2.6.0)
-
 GEM
   remote: https://rubygems.org/
   specs:
@@ -184,6 +176,10 @@ GEM
     gitlab-pygments.rb (0.3.2)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
+    gitlab_git (2.0.0.pre)
+      activesupport (~> 3.2.13)
+      github-linguist (~> 2.3.4)
+      gitlab-grit (~> 2.6.0)
     gitlab_meta (6.0)
     gitlab_omniauth-ldap (1.0.3)
       net-ldap (~> 0.3.1)
@@ -572,7 +568,7 @@ DEPENDENCIES
   gitlab-gollum-lib (~> 1.0.1)
   gitlab-grack (~> 1.0.1)
   gitlab-pygments.rb (~> 0.3.2)
-  gitlab_git!
+  gitlab_git (~> 2.0.0.pre)
   gitlab_meta (= 6.0)
   gitlab_omniauth-ldap (= 1.0.3)
   gon