Update doxygen documentation

hipamd/docs/RuntimeAPI/html/Synchonization.html

@@ -109,7 +109,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
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-Generated on Sat Apr 16 2016 14:52:10 for HIP: Heterogenous-computing Interface for Portability by &#160;<a href="http://www.doxygen.org/index.html">
+Generated on Tue Apr 19 2016 22:44:02 for HIP: Heterogenous-computing Interface for Portability by &#160;<a href="http://www.doxygen.org/index.html">
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