initial code for nokogiri integration
first attempt to strip erb tag via regex

HtmlValidator & use regex to cleanup erb tags from source files

more work on html erb stripping, nicer errors...
rewrite own ERB Compiler class to remove erb tags

this compiler keeps line numbers correct

add ErbSanitizer class which removes all erb tags

improve erb sanitizer Compiler, remove old FakeERB
add spec for RunnerDecorator
bump version
Merge branch 'add_nokogiri_html_validator'