Remove Gemfile.lock from git

.gitignore

@@ -1,6 +1,7 @@
 # Jekyll and Scss
 _site/
 /sass_cache/
+Gemfile.lock
 
 #############
 ## Windows 

Gemfile.lock

@@ -1,64 +0,0 @@
-GEM
-  remote: https://rubygems.org/
-  specs:
-    RedCloth (4.2.9-x86-mingw32)
-    blankslate (2.1.2.4)
-    classifier (1.3.4)
-      fast-stemmer (>= 1.0.0)
-    colorator (0.1)
-    commander (4.1.5)
-      highline (~> 1.6.11)
-    fast-stemmer (1.0.2)
-    ffi (1.9.3-x86-mingw32)
-    github-pages (12)
-      RedCloth (= 4.2.9)
-      jekyll (= 1.4.2)
-      kramdown (= 1.2.0)
-      liquid (= 2.5.4)
-      maruku (= 0.7.0)
-      rdiscount (= 2.1.7)
-      redcarpet (= 2.3.0)
-    highline (1.6.20)
-    jekyll (1.4.2)
-      classifier (~> 1.3)
-      colorator (~> 0.1)
-      commander (~> 4.1.3)
-      liquid (~> 2.5.2)
-      listen (~> 1.3)
-      maruku (~> 0.7.0)
-      pygments.rb (~> 0.5.0)
-      redcarpet (~> 2.3.0)
-      safe_yaml (~> 0.9.7)
-      toml (~> 0.1.0)
-    kramdown (1.2.0)
-    liquid (2.5.4)
-    listen (1.3.1)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
-      rb-kqueue (>= 0.2)
-    maruku (0.7.0)
-    parslet (1.5.0)
-      blankslate (~> 2.0)
-    posix-spawn (0.3.8)
-    pygments.rb (0.5.4)
-      posix-spawn (~> 0.3.6)
-      yajl-ruby (~> 1.1.0)
-    rb-fsevent (0.9.4)
-    rb-inotify (0.9.3)
-      ffi (>= 0.5.0)
-    rb-kqueue (0.2.0)
-      ffi (>= 0.5.0)
-    rdiscount (2.1.7)
-    redcarpet (2.3.0)
-    safe_yaml (0.9.7)
-    toml (0.1.0)
-      parslet (~> 1.5.0)
-    wdm (0.1.0)
-    yajl-ruby (1.1.0-x86-mingw32)
-
-PLATFORMS
-  x86-mingw32
-
-DEPENDENCIES
-  github-pages
-  wdm (>= 0.1.0)