Minor tweak to install docs

llvm-svn: 174448
GitOrigin-RevId: 948321e328bebf6f53bff9df4919860f34abf0ba
diff --git a/INSTALL.txt b/INSTALL.txt
index e8e3209..bd2f4fe 100644
--- a/INSTALL.txt
+++ b/INSTALL.txt
@@ -44,6 +44,6 @@
 compiler and header files into the prefix directory selected when LLVM was
 configured.
 
-The Clang compiler is available as 'clang' and supports a gcc like command line
+The Clang compiler is available as 'clang' and 'clang++'. It supports a gcc like command line
 interface. See the man page for clang (installed into $prefix/share/man/man1)
 for more information.