quick fix for PHP < 5.5; immediate dereferencing is allowed since 5.5
removed unused property
removed unused variable
added simple getter
added failing test
added default encoding constant and two methods: xmlToText() and processXml()
moved test cases to the test class property
refactored xmlToText() method a little bit
changed exception test and added first test testing xml->github
second test case passing
third test case passing
blockqoute test cases passing
moved back test cases to proper data provider, removed logic from xmlToText() data provider and made all <em /> and <strong /> test cases passing
<hr/> test passes
all headline tests pass
styling changes and links test cases pass
small refactoring and some comments added
No recycling
Merge pull request #14 from hackathoners/xml-to-github-markdown

Xml to github markdown
Merge branch 'public-interface' into jira

Conflicts:
	src/MarkupTranslator/Translators/Base.php
	src/MarkupTranslator/Translators/Github.php
	tests/MarkupTranslator/Translators/GithubTest.php