Minor docblock updates.

src/Mustache/Cache/FilesystemCache.php

@@ -17,7 +17,7 @@
  *     $cache = new Mustache_Cache_FilesystemCache(dirname(__FILE__).'/cache');
  *     $cache->cache($className, $compiledSource);
  *
- * Benefits from any opcode caching that may be setup in your environment.
+ * The FilesystemCache benefits from any opcode caching that may be setup in your environment. So do that, k?
  */
 class Mustache_Cache_FilesystemCache extends Mustache_Cache_AbstractCache
 {

src/Mustache/Cache/NoopCache.php

@@ -12,8 +12,8 @@
 /**
  * Mustache Cache in-memory implementation.
  *
- * In-memory implementation useful during development.
- * Not recommended for production use.
+ * The in-memory cache is used for uncached lambda section templates. It's also useful during development, but is not
+ * recommended for production use.
  */
 class Mustache_Cache_NoopCache extends Mustache_Cache_AbstractCache
 {