Merge pull request #3 from spectator/master

Properly log start of instrumentation
Merge pull request #4 from spectator/master

Require #method_tracer to make sure it's loaded before we start doing anything
Merge pull request #5 from spectator/master

Bootstrap test suite and add very simple test
add documents
Bumping version to 1.1.0
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Bumping version to 1.1.0
  add documents