Update the release notes.

docs/ReleaseNotes.md

 Release Notes
 =============
+
+Version 7.0.0: Saturday June 28th 2014 \[Jun 2014\]
+---------------------------------------------------
+
+  *  Update to Unicode Character Data 7.0.0.
+  *  Updated the script list to support all ISO 15924 scripts.
+  *  Add a make target for building the documentation.
+
+Version 6.3.0: Wednesday October 16th 2013 \[Oct 2013\]
+-------------------------------------------------------
+
+  *  Update to Unicode Character Data 6.3.0.
+
+Version 6.2.0: Wednesday October 16th 2013 \[Oct 2013\]
+-------------------------------------------------------
+
+  *  Use Unicode Character Data 6.2.0.
+  *  General Category group and value lookup.
+  *  Script lookup.
+  *  `White_Space` property lookup provided by `isspace`.
+  *  Uses compact data tables for minimal overhead.
+  *  Support for Klingon [F8D0-F8FF] from the ConScript Unicode Registry.
+
+wctype.h/wchar.h compatibility: 
+
+  *  ctype-style API.
+  *  case conversion API (including `totitle` to convert to title case).
+
+  *  Supports the following information from the Unicode Character Data:
+     *  General Category Value (`UnicodeData.txt`);
+     *  General Category Group (`UnicodeData.txt`).
+  *  Supports the following properties from `PropertyList.txt`:
+  *  ctype-style API compatible with `wctype.h`.
+  *  case-conversion API for