Update version and metadata for forge
Adds "Release Notes/Known Bugs" to Changelog, updates file format to markdown, standardizes the format of previous entries

Per a request to have initial release notes that specifically listed known issues for this PE 3.2 release, and barred by time constraints from automating a pull from open issues in JIRA, this commit adds a Release Note and Known Bug section to the Changelog for the imminent 3.2 release. As it will display on the Forge, updates file type to markdown and standardizes previous entries.
Merge pull request #25 from laurenrother/changelog

Add "Release Notes/Known Bugs" to Changelog
Release 0.1.5

Summary
This is a supported release.

Known Bugs
* The version is `0.x` but should be considered a `1.x` for semantic
  versioning purposes.
Merge pull request #26 from hunner/release_0.1.5

Release 0.1.5
Merge pull request #24 from adreyer/master

Update version and metadata for forge
Patch metadata
Merge pull request #27 from hunner/fix_metadata

Patch metadata
Broken testing
Updated gitignore and removed .iml
Updated spec testing
Updated to have travis and fixture yaml
Merge pull request #29 from cyberious/master

Add testing for unsupported OS and throws error
Update RSpec Expect api to meet newer version in Gemfile

 - Updated gitignore to ignore RubyMine files
Updated with TravisCI support and fixture yaml
Added PuppetLint tasks to rake
Disable PuppetLint autoloader warning
Added Nokogiri and other gems required for testing
Updated gitignore
Removed Beaker 1.3.1 restriction