Perf loading message
Reorder node defs to match parser api docs
update acorn version
Add support for locations

Locations tests now pass
Brought overture back up to date with acorn
update readme
For-of Statement
add rest parameters
add rest tests
use processed overture file
add jetstream code examples to perf tests

These files are big and complex - typescript, emscripten and mandreel
add uglify2 parser
commit preprocessor output
add traceur parser
update acorn and esprima to latest versions
reduce garbage.  add let/const support