Gemfile in newrelic_rpm-3.15.0.314

- old
+ new

@@ -14,10 +14,10 @@
   gem "activerecord-jdbcsqlite3-adapter", "~>1.3.0"
   gem "jruby-openssl"
 end
 
 platforms :ruby do
-  gem "mysql"
+  gem "mysql2", '~> 0.3.20'
   gem "sqlite3"
 end
 
 platforms :rbx do
   gem "rubysl"