added mongodb-log2ejson for log type parsing

and updated tests (some regex texts no longer valid)
removed some commented out tests.
added mongodb-log2ejson for log type parsing

and updated tests (some regex texts no longer valid)
removed some commented out tests.
Merge branch '43-parse-log-types' of github.com:rueckstiess/mongodb-log into 43-parse-log-types

Conflicts:
	index.js
	test/operation.test.js
Merge pull request #44 from rueckstiess/43-parse-log-types

parse log types. Fixes #43.