0.1.29: make bundle backwards-compatible with 0.1.25

npm doesn't play well with the symlink bitcore-latest.js. Instead, put the
latest main bundle in bundle.js (which is what it used to be called) so
packages like Copay can use the latest bundle just like how they used to.

bower.json

@@ -1,7 +1,7 @@
 {
   "name": "bitcore",
   "main": "browser/bundle.js",
-  "version": "0.1.28",
+  "version": "0.1.29",
   "homepage": "http://bitcore.io",
   "authors": [
     "Ryan X. Charles (<ryan@bitpay.com>)"

browser/bitcore-latest.js

@@ -1 +0,0 @@
-bitcore-0.1.28.js

package.json

@@ -1,7 +1,7 @@
 {
   "name": "bitcore",
   "description": "Bitcoin Library",
-  "version": "0.1.28",
+  "version": "0.1.29",
   "author": {
     "name": "Stephen Pair",
     "email": "stephen@bitpay.com"