Added change log

Author: boenrobot

RELEASE-0.2.1

@@ -0,0 +1,6 @@
+* Added a composer.json, and this package to packagist.org.
+* Fixed GitHub issue #2: columnWrap() in Default Renderer eats up lines with only a EOL.
+* Fixed validation of XML definition files: The directory of the RNG schema was wrong.
+* Fixed test suite errors, including namespace related ones and adding Travis-CI configuration.
+* Removed PEAR2\Exception dependency - This package's exception directly inherits from the root Exception.
+* CS fixes.