Update package info

Move from `gonzales` to `gonzales-pe`
Update tests
Add .npmignore
Build files before running tests
Sass: Parse blocks inside values
Sass: Improve parsing of interpolations

Check for interpolated vars inside values and pseudo elements
Sass: Interpolated vars inside class names

Treat interpolated vars inside class names as part of identifier.
For example, translate `.abc-#{$nani}` to `['clazz', ['ident',
'abc-#{$nani}']]`.
Add tests
Add logs
Tests: Divide tests into groups acc. syntax
Add token numbers to needInfo output
Tests: Add script to test one specific css string

Print AST and string translated from AST.
Just change the first line of the script(`var src`) and run `node test/ast.js`.
Sass: Pass syntax name as a parameter

Make conditional checks for syntax-specific nodes (e.g. variables).
Tests: Move scss tests to corresponding directory
Clean up
Tests: Add tests for scss syntax