add customer auth endpoint

paywhirl.py

@@ -142,6 +142,20 @@ def get_profile(self, customer_id: int) -> Any:
 
         return self._get(str.format('/customer/profile/{0}', customer_id))
 
+    def auth_customer(self, email: str, password: str) -> Any:
+        """Authenticate a customer with supplied data.
+
+        Args:
+            email: customer's email address
+            password: plain-text or bcrypt hashed password
+
+        Returns:
+            Dictionary with status 'success' or 'failure'.
+        """
+
+        data = {'email': email, 'password': password}
+        return self._post('/auth/customer', data)
+
     def create_customer(self, data: dict) -> Any:
         """Create a new customer with supplied data.
 
@@ -671,19 +685,19 @@ def get_email_template(self, template_id: int) -> Any:
         return self._get(str.format('/email/{0}', template_id))
 
     def send_email(self, data: dict) -> Any:
-    	"""Send a system generated email based on one of your pre-
-    		 defined templates on your paywhirl account page
+      """Send a system generated email based on one of your pre-
+         defined templates on your paywhirl account page
 
-    		Args:
-    			see api.paywhirl.com, the list depends on what
-    			email templates you have available
+        Args:
+          see api.paywhirl.com, the list depends on what
+          email templates you have available
 
-    		Returns:
-    			either a string with "status" => "success" or an error message indicating
-    			the need for another parameter
-    	"""
+        Returns:
+          either a string with "status" => "success" or an error message indicating
+          the need for another parameter
+      """
 
-    	return self._post('/send-email', data)
+      return self._post('/send-email', data)
 
     def get_account(self) -> Any:
         """Get a dictionary containing your account information."""
@@ -772,4 +786,4 @@ def _get(self, endpoint: str, params: Any = None) -> Any:
             resp.close()
             return ret
 
-        return resp.status_code
+        return resp.status_code