Update traits/util/trait_documenter.py

minor correction
add trait_documenter module in the api reference
minor corrections on the docstrings
Merge remote-tracking branch 'origin/feature-trait-documenter' into feature-trait-documenter

# By IoannisTziakos
# Via IoannisTziakos
* origin/feature-trait-documenter:
  Update traits/util/trait_documenter.py

Conflicts:
	traits/util/trait_documenter.py
Merge pull request #34 from enthought/feature-trait-documenter

Feature: trait documenter
Update docs/Makefile

Corrects qthelp docs creation.
Merge pull request #37 from Snegovikufa/master

Correction for qthelp docs creation
Merge branch 'master' into update-documentation

# By Ioannis Tziakos (2) and others
# Via Chris Farrow (1) and others
* master:
  Update docs/Makefile
  minor corrections on the docstrings
  add trait_documenter module in the api reference
  Update traits/util/trait_documenter.py
rename handle -> toolkit control