added build script and initial version

sendxmpp.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+: ${PLUGIN_USERNAME?"missing username"}
+: ${PLUGIN_JSERVER?"missing jserver"}
+: ${PLUGIN_PASSWORD?"missing password"}
+: ${PLUGIN_RECIPIENT?"missing recipient"}
+
+env | grep DRONE
+
+MSG="drone ist da"
+
+CMD="sendxmpp \
+  -u ${PLUGIN_USERNAME} \
+	-j ${PLUGIN_JSERVER} \
+	-p ${PLUGIN_PASSWORD} \
+	--tls \
+	--verbose \
+	--no-tls-verify
+	${PLUGIN_RECIPIENT}"
+
+echo $MSG | $CMD