Rename constant.  WARMIN_CYCLE to WARMING_CYCLE
Modify method `runBenchmark()` for BH engine
Add separator to results table
Add option to include specified tech(bemhtml, bh)
Modify condition for creating separator to results table
Realisation `-t` option
Add checking for BEMHTML, BH built
Move isBh and isBemhtml to global scope (for correct setup separator on results table)
Add checking exists of BEMHTML, BH  for correct adding separator
Add checking on run tests depending on BEMHTML, BH exist
Refactoring checking BEMHTML, BH on real file exist
Add information about bh configuration
Correcting docs about `bh` configuration
Refactoring `runBenchmark()` and add comments about the condition
Change a title of the option
Refactoring: remove global variables and long conditions
Minor code cleanup
Merge branch 'master' into bem-bench-bh

Conflicts:
	lib/bench.js
Merge pull request #400 from bem/bem-bench-bh

Add ability to test `bh` templates with `bem bench` and compare them with `bemhtml`