Updated Token class

I updated the token class to comply with the new url build design.

Author: taylorjdawson

etherscan/tokens.py

@@ -4,34 +4,19 @@
 class Tokens(Client):
     def __init__(self, tokenname='TheDAO', api_key='YourApiKeyToken'):
         Client.__init__(self, address='', api_key=api_key)
-        self.tokenname = '&tokenname=' + tokenname
-
-    def make_url(self, call_type=''):
-        if call_type == 'tokensupply':
-            self.url = self.URL_BASES['prefix'] \
-                + self.module \
-                + self.action \
-                + self.tokenname \
-                + self.key
-        elif call_type == 'tokenbalance':
-            self.url = self.URL_BASES['prefix'] \
-                + self.module \
-                + self.action \
-                + self.tokenname \
-                + self.address \
-                + self.key
+        self.url_dict[self.TOKEN_NAME] = tokenname
 
     def get_total_supply(self):
-        self.action = self.URL_BASES['action'] + 'tokensupply'
-        self.module = self.URL_BASES['module'] + 'stats'
-        self.make_url(call_type='tokensupply')
+        self.url_dict[self.ACTION] = 'tokensupply'
+        self.url_dict[self.MODULE] = 'stats'
+        self.build_url()
         req = self.connect()
         return req['result']
 
     def get_token_balance(self, address):
-        self.address = self.URL_BASES['address'] + address
-        self.module = self.URL_BASES['module'] + 'account'
-        self.action = self.URL_BASES['action'] + 'tokenbalance'
-        self.make_url(call_type='tokenbalance')
+        self.url_dict[self.ADDRESS] = address
+        self.url_dict[self.MODULE] = 'account'
+        self.url_dict[self.ACTION] = 'tokenbalance'
+        self.build_url()
         req = self.connect()
-        return req['result']
+        return req['result']