add Gemfile for Bundler support

Author: jamesarosen

Gemfile

@@ -0,0 +1,3 @@
+source 'http://rubygems.org'
+
+gemspec

Gemfile.lock

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+PATH
+  remote: .
+  specs:
+    rack-mini-profiler (2.0.1a)
+      json (>= 1.6)
+      rack (>= 1.3)
+      ruby-debug (>= 0.10)
+
+GEM
+  remote: http://rubygems.org/
+  specs:
+    activemodel (3.2.2)
+      activesupport (= 3.2.2)
+      builder (~> 3.0.0)
+    activerecord (3.2.2)
+      activemodel (= 3.2.2)
+      activesupport (= 3.2.2)
+      arel (~> 3.0.2)
+      tzinfo (~> 0.3.29)
+    activesupport (3.2.2)
+      i18n (~> 0.6)
+      multi_json (~> 1.0)
+    arel (3.0.2)
+    builder (3.0.0)
+    columnize (0.3.6)
+    i18n (0.6.0)
+    json (1.6.6)
+    linecache (0.46)
+      rbx-require-relative (> 0.0.4)
+    multi_json (1.2.0)
+    rack (1.4.1)
+    rack-test (0.6.1)
+      rack (>= 1.0)
+    rake (0.9.2.2)
+    rbx-require-relative (0.0.9)
+    ruby-debug (0.10.4)
+      columnize (>= 0.1)
+      ruby-debug-base (~> 0.10.4.0)
+    ruby-debug-base (0.10.4)
+      linecache (>= 0.3)
+    tzinfo (0.3.32)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activerecord (~> 3.0)
+  rack-mini-profiler!
+  rack-test
+  rake