added new folder for russian documetation
Merge branch 'documentation' of github.com:KirillDbr/groovy-ru-doc into documentation
updated string chapter
finished numbers for core-syntax
Started jmx.doc
added translation of descripion Groovy.
Merge branch 'documentation' of github.com:KirillDbr/groovy-ru-doc into documentation
Перевёл как собирать Groovy. Translated build instruction
Readme переведён на русский
Corrected readme translation