Added CHANGELOG.md.

CHANGELOG.md

+### 1.3.0
+
+* __Feature__: StoragePid not needed anymore - in case the records are located on the same page where the plugin is.
+* __Feature__: Added Extension Configuration - you can access it via the Extension Manager
+* __Feature__: Added Subtitle Transformation to RTE via EXT Conf.
+* __Bugfix__: Now it is possible to use the Plugin within TypoScript Libs.
+* __Bugfix__: Revised field image - It is now required and only allows max 1 item.
+* __Misc__: Extended Fluid Template.
+
+### 1.2.2
+
+* __Bugfix__: Fixed a bug regarding backward compatibility to TYPO3 4.5.x.
+* __Misc__: Improved performance.
+
+### 1.2.1
+
+* __Bugfix/Feature__: Running multiple FlexSliders per Page now possible.
+* __Misc__: Improved performance.
+* __Misc__: Updated README.md.
+
+### 1.2.0
+
+* Initial Release
+* Initial TER Upload
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