Wraps .jsbeautifyrc file read into a try/catch since it could be no longer available.

src/beautifiers/index.coffee

@@ -633,9 +633,12 @@ module.exports = class Beautifiers extends EventEmitter
     externalOptions = undefined
     if configPath
       fs ?= require("fs")
+      try
         contents = fs.readFileSync(configPath,
           encoding : "utf8"
         )
+      catch error
+        contents = null #file isnt available anymore
       unless contents
         externalOptions = {}
       else