Added some colors to README.

Signed-off-by: chatgris <jboyer@af83.com>

README.md

@@ -16,30 +16,38 @@ Usage
 
 Create a pool of objects to share amongst the fibers or threads in your Ruby application:
 
-    @memcached = ConnectionPool.new(:size => 5, :timeout => 5) { Dalli::Client.new }
+``` ruby
+@memcached = ConnectionPool.new(:size => 5, :timeout => 5) { Dalli::Client.new }
+```
 
 Then use the pool in your application:
 
-    @memcached.with_connection do |dalli|
+``` ruby
-      dalli.get('some-count')
+@memcached.with_connection do |dalli|
-    end
+  dalli.get('some-count')
+end
+```
 
 You can use `ConnectionPool::Wrapper` to wrap a single global connection, making
 it easier to port your connection code over time:
 
-    $redis = ConnectionPool::Wrapper.new(:size => 5, :timeout => 3) { Redis.connect }
+``` ruby
-    $redis.sadd('foo', 1)
+$redis = ConnectionPool::Wrapper.new(:size => 5, :timeout => 3) { Redis.connect }
-    $redis.smembers('foo')
+$redis.sadd('foo', 1)
+$redis.smembers('foo')
+```
 
 The Wrapper uses `method_missing` to checkout a connection, run the
 requested method and then immediately check the connection back into the
 pool.  It's **not** high-performance so you'll want to port your
 performance sensitive code to use `with_connection` as soon as possible.
 
-    $redis.with_connection do |conn|
+``` ruby
-      conn.sadd('foo', 1)
+$redis.with_connection do |conn|
-      conn.smembers('foo')
+  conn.sadd('foo', 1)
-    end
+  conn.smembers('foo')
+end
+```
 
 Once you've ported your entire system to use `with`, you can simply
 remove ::Wrapper and use a simple, fast ConnectionPool.