nvim: add plugin test script

Plugins that cause errors at startup are hard to debug. This script
removes all the plugins, and adds them back in one by one, testing nvim
each step to see what happened. Bad plugins are quarantined.

config/nvim/test.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+nvim=~/.config/nvim
+mkdir -p $nvim/bundle.bad
+mv "$nvim"/bundle/* "$nvim"/bundle.back
+mv "$nvim"/bundle.back/neomake "$nvim"/bundle
+mv "$nvim"/bundle.back/colors "$nvim"/bundle
+mv "$nvim"/bundle.back/airline "$nvim"/bundle
+
+for x in $nvim/bundle.back/* ; do
+	plugin=$( basename "$x")
+	mv "$nvim/bundle.back/$plugin" "$nvim/bundle/$plugin"
+	nvim "$@"
+	echo "plugin $plugin"
+	read -p "did it work? " -N1 yn
+	echo ""
+	case "$yn" in
+		[nN])
+			echo "Quarantine $plugin"
+			mv "$nvim/bundle/$plugin" "$nvim/bundle.bad/$plugin"
+			;;
+		*)
+	esac
+done