Merge pull request #1083 from seanpaultaylor/master

Default install scripts to use external-deps-master.zip

install.bat

@@ -13,7 +13,7 @@ set prefix=http://www.gameplay3d.org
 
 set branchname=%1
 if "%branchname%" == "" (
-  set branchname=next
+  set branchname=master
 )
 
 set filename=gameplay-deps-%branchname%

install.sh

@@ -12,7 +12,7 @@ prefix=http://www.gameplay3d.org
 
 branchname=$1
 if [[ "$branchname" == "" ]]; then
-  branchname="next"
+  branchname="master"
 fi
 
 filename=gameplay-deps-$branchname