fix: lintsOnChange wasn't defined

Changing the old `lintOnFly` to `lintsOnChange` was missed as part of 
#238.

Author: Arcanemagus

lib/main.js

@@ -143,7 +143,7 @@ export default {
       name: 'TSLint',
       grammarScopes,
       scope: 'file',
-      lintOnFly: true,
+      lintsOnChange: true,
       lint: async (textEditor) => {
         if (this.ignoreTypings && textEditor.getPath().toLowerCase().endsWith('.d.ts')) {
           return [];