Revert "Ignore Gemfile.lock"

This reverts commit a5fbcff765.

Revert this as we need it for now.

.gitignore

@@ -37,4 +37,3 @@ ext/rlibmemcached_wrap.c.in
 ext/mkmf.log
 *.[1,3]
 .libs
-*.lock

Gemfile.lock

@@ -0,0 +1,45 @@
+PATH
+  remote: .
+  specs:
+    memcached (1.7.2)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (3.2.6)
+      i18n (~> 0.6)
+      multi_json (~> 1.0)
+    allison (2.0.3)
+    dalli (2.6.4)
+    echoe (4.6.5)
+      allison (>= 2.0.3)
+      rake (>= 0.9.2)
+      rdoc (>= 2.5.11)
+      rubyforge (>= 2.0.4)
+    i18n (0.6.0)
+    json_pure (1.8.1)
+    memcache (1.4.1)
+    memcache-client (1.8.5)
+    metaclass (0.0.1)
+    mocha (0.12.0)
+      metaclass (~> 0.0.1)
+    multi_json (1.3.6)
+    rake (0.9.2.2)
+    rdoc (4.1.0)
+    remix-stash (1.1.3)
+    rubyforge (2.0.4)
+      json_pure (>= 1.1.7)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activesupport
+  dalli (~> 2.6.4)
+  echoe (>= 4.6.5)
+  memcache (= 1.4.1)
+  memcache-client (~> 1.8.5)
+  memcached!
+  mocha
+  rake
+  remix-stash (~> 1.1.3)