update generic PropTypes snippet (w/ choices)

* string|number|bool|func|any|...

Author: carloluis

README.md

@@ -24,7 +24,7 @@ u-rfc               // Functional component (stateless)
 
 * PropTypes
 ```javascript
-u-pt                // Generic PropType
+u-pt                // Generic PropType (string|number|func|...)
 u-pta               // Array PropType
 u-ptany             // Any PropType
 u-ptarrayof         // Array Of (PropType)

snippets/snippets.json

@@ -125,7 +125,7 @@
 	"PropTypes": {
 		"prefix": "u-pt",
 		"body": [
-			"$1: PropTypes.$2.isRequired"
+			"$1: PropTypes.${2|string,number,bool,func,array,object,symbol,element,node,any|}.isRequired"
 		],
 		"description": "React PropType"
 	},