Modified the setup order

Modified the setup order so it takes python3 by default

Author: MonnXI

setup.sh

@@ -1,10 +1,10 @@
 #!/bin/bash
 cd $(dirname $0)
 
-if python --version &> /dev/null; then
-	python installer
-elif python3 --version &> /dev/null; then
+if python3 --version &> /dev/null; then
 	python3 installer
+elif python --version &> /dev/null; then
+	python installer
 elif python2 --version &> /dev/null; then
 	python2 installer
 else