try to rm Gemfile.lock again to avoid jruby build problems

Author: loadkpi

.gitignore

@@ -45,6 +45,7 @@ build-iPhoneSimulator/
 
 # for a library or gem, you might want to ignore these files since the code is
 # intended to run in multiple environments; otherwise, check them in:
+Gemfile.lock
 .ruby-version
 .ruby-gemset