Test to see if the binary already exists.

tmux-mem-cpu-load.plugin.tmux

@@ -18,6 +18,10 @@
 # The directory where this plugin is located.
 CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
+if [ ! -f $CURRENT_DIR/tmux-mem-cpu-load ] && ! $(builtin type -P "tmux-mem-cpu-load" &> /dev/null) ; then
+   tmux run-shell "echo \"tmux-mem-cpu-load not found. Attempting to build.
+   \""
+
    pushd $CURRENT_DIR #Pushd to the directory where this plugin is located.
 
    # Attempt to rebuild the plugin and log any errors in the tmux display window.
@@ -40,5 +44,6 @@ else
       \""
       exit 1
    fi
-
    popd
+fi
+