Get socket returns promise and sassVariables --> styleVariables
Merge pull request #135 from anttisalo/sassVariablesRenamed

Get socket returns promise and sassVariables --> styleVariables
Change variables values for SCSS syntax
Normal overwriting of multiple values
Pass syntax when setting variables
Change variables in LESS syntax
No test for "generate valid SASS file when original file is empty"
Codestyle
Changing variables for LESS
Tests for setting valiables with Parser
Codestyle fixes
Tests for comments and indents