Add basic performance test script
Merge branch 'master' into perf-tests
fix warning in perf test
Build benchmark notebooks and modify test to take 40 measurements
Move performance testing script into benchmark/ folder.
Rename perf.py -> benchmark.py
Output commit and timestamp in benchmark script
run_all.py
Add benchmark results ipython notebook.
Merge branch 'perf-tests'
Merge branch 'master' of github.com:tarmstrong/nbdiff