Add angular snippets.

Add two jasmine snippets for use with angular that prepoulate the
"it" and "before" functions with "inject".  Add an angular config
snippet.

UltiSnips/javascript_angular.snippets

@@ -0,0 +1,19 @@
+priority -50
+
+snippet iti "it (js, inject)" b
+it('${1:description}', inject(function($2) {
+	$0
+}));
+endsnippet
+
+snippet befi "before each (js, inject)" b
+beforeEach(inject(function($1) {
+	$0
+}));
+endsnippet
+
+snippet acon "angular config" i
+config(function($1) {
+	$0
+});
+endsnippet