Add goenv plugin

plugins/available/goenv.plugin.bash

@@ -0,0 +1,21 @@
+cite about-plugin
+about-plugin 'Init goenv, if installed. Plays nicely with package managers'
+
+# Try to set GOENV_ROOT if not already set
+if [ -z "${GOENV_ROOT}" ]; then
+	# Bail if cannot be set
+	if [ ! -d "$HOME/.goenv" ]; then
+		return
+	fi
+	export GOENV_ROOT="$HOME/.goenv"
+fi
+
+# Add GOENV_ROOT/bin to path if goenv not already on path
+if ! _command_exists goenv && [ -x "${GOENV_ROOT}/bin/goenv" ]; then
+	pathmunge "$GOENV_ROOT/bin"
+fi
+
+# Initialize goenv - Play nicely if goenv not on path
+if _command_exists goenv ; then
+	eval "$(goenv init - bash)"
+fi