chore(release): 2.0.1-beta.67 [skip ci]

## [2.0.1-beta.67](https://github.com/PolymathNetwork/polymath-sdk/compare/v2.0.1-beta.66@beta...v2.0.1-beta.67@beta) (2019-12-05)

### Features

* add support for signature requests ([703c409](703c409))

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@polymathnetwork/sdk",
-  "version": "2.0.1-beta.66",
+  "version": "2.0.1-beta.67",
   "description": "A Javascript SDK for interacting with the Polymath network for the browser and Node.js",
   "bugs": {
     "url": "https://github.com/PolymathNetwork/polymath-sdk/issues"