Specify basis for inheritance of mods needing it

Create scripts.js file for gen5bw in order to do so.

mods/gen1/scripts.js

@@ -3,6 +3,7 @@
  * using this.
  */
 exports.BattleScripts = {
+	inherit: 'gen5',
 	gen: 1,
 	init: function () {
 		for (var i in this.data.Learnsets) {

mods/gen2/scripts.js

@@ -2,6 +2,7 @@
  * Gen 2 scripts.
  */
 exports.BattleScripts = {
+	inherit: 'gen5',
 	gen: 2,
 	getCategory: function(move) {
 		move = this.getMove(move);

mods/gen3/scripts.js

@@ -1,4 +1,5 @@
 exports.BattleScripts = {
+	inherit: 'gen5',
 	gen: 3,
 	init: function() {
 		for (var i in this.data.Learnsets) {

mods/gen4/scripts.js

@@ -1,4 +1,5 @@
 exports.BattleScripts = {
+	inherit: 'gen5',
 	gen: 4,
 	init: function() {
 		for (var i in this.data.Learnsets) {

mods/gen5bw/scripts.js

@@ -0,0 +1,3 @@
+exports.BattleScripts = {
+	inherit: 'gen5'
+};

mods/gennext/scripts.js

@@ -1,4 +1,5 @@
 exports.BattleScripts = {
+	inherit: 'gen5',
 	gen: 5,
 	init: function() {
 		this.modData('Pokedex', 'cherrimsunshine').types = ['Grass', 'Fire'];

mods/tiershift/scripts.js

@@ -1,4 +1,5 @@
 exports.BattleScripts = {
+	inherit: 'gen5',
 	gen: 5,
 	init: function() {
 		for (var i in this.data.Pokedex) {