Update version (#126)

package.json

@@ -1,7 +1,7 @@
 {
     "name": "usfm-grammar",
     "description": "An elegant [USFM](https://github.com/ubsicap/usfm) parser (or validator) that uses a [parsing expression grammar](https://en.wikipedia.org/wiki/Parsing_expression_grammar) to model USFM. The grammar is written using [ohm](https://ohmlang.github.io/). Only USFM 3.0 is supported. The parsed USFM is an intuitive and easy to manipulate JSON structure that allows for painless extraction of scripture and other content from the markup. USFM Grammar is also capable of reconverting the generated JSON back to USFM.",
-    "version": "2.0.2",
+    "version": "2.1.0",
     "main": "./js/main.js",
     "scripts": {
         "test": "mocha --expose-gc --timeout 40000",