Rewrite the docs to fit the current best practices for Puppetlabs
modules.
revert concat $warn/$warn_message param split + add deprecation warnings

Partially reverting the $warn/$warn_message param split from eaf8407 as this
change was unnecessarily API breaking.  Instead, we are adding string/bool type
validating to the $warn parameter and deprecation warnings for the usage of
stringified boolean values (eg, 'true', 'on', etc.). In a future major release,
the logic can be simplified to treating all string values as a warning message.
Merge pull request #124 from jhoblitt/revert_warn_message

revert concat $warn/$warn_message param split + add deprecation warnings
add README section on API deprecations since version 1.0.0
Merge pull request #1 from jhoblitt/docs-change

add README section on API deprecations since version 1.0.0
Merge pull request #114 from apenney/docs-change

Rewrite the docs to fit the current best practices for Puppetlabs
work around RubyGems 2.2.0 breaking ruby 1.8.7
Merge pull request #126 from jhoblitt/rubygems_220_travis_workaround

work around RubyGems 2.2.0 breaking ruby 1.8.7
1.1.0 release.
Add information on deprecations.
Merge pull request #125 from apenney/200-release

1.1.0 release.