Add a script to bump the submodule references in SF/SV.

Author: JBYoshi

bump-spongecommon

@@ -0,0 +1,17 @@
+#!/bin/sh
+if [ $# = 0 ]
+then
+  echo Please specify the commit message. "Bump SpongeCommon" is inserted at the start.
+  exit 1
+fi
+old_dir=`pwd`
+cd `dirname $0`
+cd SpongeForge
+git add SpongeCommon
+git commit -m "Bump SpongeCommon $*"
+git push
+cd ../SpongeVanilla
+git add SpongeCommon
+git commit -m "Bump SpongeCommon $*"
+git push
+cd $old_dir

init

@@ -36,7 +36,7 @@ fi
 
 if [ ! -d SpongeForge ]
 then
-  git checkout https://github.com/SpongePowered/SpongeForge.git
+  git clone https://github.com/SpongePowered/SpongeForge.git
 fi
 cd SpongeForge
 maybemkdir SpongeCommon
@@ -46,7 +46,7 @@ cd ..
 if [ ! -d SpongeVanilla ]
 then
   echo Cloning SpongeVanilla...
-  git checkout https://github.com/SpongePowered/SpongeVanilla.git
+  git clone https://github.com/SpongePowered/SpongeVanilla.git
 fi
 cd SpongeVanilla
 maybemkdir SpongeCommon