added xml post processing
added xml variables for processing
added some log output
Simplified Regex.
Changed defaultValue for expression.
Added lodash as a dependencies.
Replace actual newline and tabs for their utf8 code in template value.
Merge pull request #2 from wawyed/develop

Develop - Enhancement for default variables by wawyed.
Update postprocess.js

changed bitwise to logical 'or'
added contribution guidelines and fixed some coding style issues.
Merge branch 'develop'