Fix bug in AbstractStringBuilder.delete
Merge pull request #36 from drxaos/master

Fix bug in AbstractStringBuilder.delete
Update README.md
Switch benchmark to use GWT version 2.7.0
Clean-up project
Fix https://github.com/konsoletyper/teavm/issues/39
Fix https://github.com/konsoletyper/teavm/issues/29
Refactor TeaVM core for new diagnostics API
Merge branch 'master' into diagnostics