add BULLET and BULLET_SP

Reviewed By: TheSavior

Differential Revision: D6983446

fbshipit-source-id: c8ce4b1c7836654910db84c9cd4b6d0bcec8ae27

Libraries/UTFSequence.js

@@ -23,6 +23,8 @@ const deepFreezeAndThrowOnMutationInDev = require('deepFreezeAndThrowOnMutationI
  *  - Less chance of typos.
  */
 const UTFSequence = deepFreezeAndThrowOnMutationInDev({
+  BULLET: '\u2022', // bullet: •
+  BULLET_SP: '\u00A0\u2022\u00A0', //  • 
   MIDDOT: '\u00B7', // normal middle dot: ·
   MIDDOT_SP: '\u00A0\u00B7\u00A0', //  · 
   MIDDOT_KATAKANA: '\u30FB', // katakana middle dot