clang-format vs plugin: claim support for VS 14 CTP too

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@214461 91177308-0d34-0410-b5e6-96231b3b80d8

tools/clang-format-vs/source.extension.vsixmanifest.in

@@ -19,6 +19,9 @@
       <VisualStudio Version="12.0">
         <Edition>Pro</Edition>
       </VisualStudio>
+      <VisualStudio Version="14.0">
+        <Edition>Pro</Edition>
+      </VisualStudio>
     </SupportedProducts>
     <SupportedFrameworkRuntimeEdition MinVersion="4.0" MaxVersion="4.0" />
   </Identifier>