Fix issue-459 (#460)

Issue 459: manual_install.sh creates wrong directory hierarchy.

Author: veita

manual_install.sh

@@ -1,7 +1,9 @@
 #!/bin/bash
 
+mkdir -p ~/.vim/
+
 for INSTALL_DIR in autoload compiler ftdetect ftplugin indent syntax
 do
-  mkdir -p ~/.vim/${INSTALL_DIR}
-  cp -R ${INSTALL_DIR}/ ~/.vim/${INSTALL_DIR}
+  cp -R ${INSTALL_DIR} ~/.vim/
 done
+