Add scripts to add provider to store description

Should also add before (for first provider), not only after.

scripts/add-provider-description.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+PATTERN="fastlane/metadata/*/description.txt"
+AFTER=$1
+NAME=$2
+DELIMITER="†"
+
+for FILE in `ls $PATTERN`; do
+    sed -E "s/${AFTER}/${AFTER}${DELIMITER}- ${NAME}/g" $FILE | tr $DELIMITER '\n' >$FILE.tmp
+    mv $FILE.tmp $FILE
+done