Start on framework overhead benchmarks
Add hooks for text extraction & context binding
WIP on cotemplating for url, request body
Document benchmarking features
Fix out of date piece in documentation
Fix a couple minor issues with JSON benchmark results
Merge branch 'master' into feature-compatible-variablebinding

Manual conflict resolution for resttest.py, since it has diverged signficantly

Conflicts:
	pyresttest/resttest.py
Fix issues with variable naming in context binding