adds tests and compiler for simple musical expression language
adds ability to handle paralell notes
adds rests and noteToMidi converter
adds repeats to musexpr syntax and more tests
adds basic PEG for scheme (called "scheem") and spec using node assert
adds simpletest.html with tests for (implemented parts of) scheme interpreter
add robo.peg
changes if to check, adds until to robo language
make everything an expression in robo.peg
adds set to language
start roboParseSpec
adds math expressions and comparison operators to robo.peg
bugfixes for comparitors and rename and->both, or->either