Fixes to Auth0 Lock

- Made all LockOptions optional.
- Added separate ConstructorOptions
- Fixed some method overloads.

auth0.lock/auth0.lock-tests.ts

@@ -1,9 +1,9 @@
 /// <reference path="../auth0/auth0.d.ts" />
-/// <reference path="auth0.widget.d.ts" />
+/// <reference path="auth0.lock.d.ts" />
 
-var lock: new Auth0Widget('dsa7d77dsa7d7', 'mine.auth0.com');
+var lock = new Auth0Lock('dsa7d77dsa7d7', 'mine.auth0.com');
 
-lock.show({
+lock.showSignin({
     connections: ['facebook', 'google-oauth2', 'twitter', 'Username-Password-Authentication'],
     icon: 'https://contoso.com/logo-32.png',
     socialBigButtons: true