Merge pull request #169 from cmgustavo/release/v0.0.22

New release v0.0.22

Author: cmgustavo

package.json

@@ -2,7 +2,7 @@
   "name": "bitcore-wallet-service",
   "description": "A service for Mutisig HD Bitcoin Wallets",
   "author": "BitPay Inc",
-  "version": "0.0.21",
+  "version": "0.0.22",
   "keywords": [
     "bitcoin",
     "copay",