Merge pull request #4 from ebernhardson/master

Utilize the JIT when running HHVM
Add knockoff and remove QuickTemplate; include compilation time

* Add knockoff tests (using tassembly)
* Make sure the lightncandy tests include the compilation time as with node
  etc
Update knockoff-node deps
Update knockoff deps
Update tassembly dependency for knockoff
Update tassembly
Fix heading for Knockoff test
Update tassembly
Update tassembly
pre-warm the jit and switch lightncandy flags