install.sh: Make success message clearer.

Implement proposal of the comment
https://github.com/ipfs/go-ipfs/pull/2504#discussion_r77872959

License: MIT
Signed-off-by: Stephan Kulla <git.mail@kulla.me>

cmd/ipfs/dist/install.sh

@@ -9,7 +9,7 @@ binpaths="/usr/local/bin /usr/bin"
 
 for binpath in $binpaths; do
   if mv -t "$binpath" "$bin" 2> /dev/null; then
-    echo "installed $binpath/$bin"
+    echo "Moved $bin to $binpath"
     exit 0
   fi
 done