Temporary fix for conflicting traceurRuntime versions in benchpress lib and consumer code

This is a brute-force solution to unblock writing benchmarks that require a different version of $traceurRuntime. 
The benchpress build step rewrites all instances of $traceurRuntime to $diTraceurRuntime and all instances of System to DITraceurSystem. Note, this only rewrites code that gets compiled into bp.js or auto-bp.js

As part of the effort of removing the build step in #18, a better solution to DI that does not require the traceur runtime to be bundled should be explored.

Fixes #21