Surround option words with quotes

gistfile1.el

;; Surround option words with quotes
;; It's helpful for making javascript work with IE.
;; i.e.:
;;
;; title: {
;;     text: "highcharts example"
;; },
;; exporting: {
;;     enabled: false
;; },
;;
;; becomes
;;
;; "title": {
;;     "text": "highcharts example"
;; },
;; "exporting": {
;;     "enabled": false
;; },

(while (re-search-forward "[a-zA-Z]+:" nil t)
  (goto-char (match-beginning 0))
  (insert "\"")
  (goto-char (match-end 0))
  (insert "\""))