Add link alias without project name

REDIS_1_PORT_6379_TCP_ADDR instead of
FIGTEST_REDIS_1_PORT_6379_TCP_ADDR.

Ref #37

fig/container.py

@@ -50,6 +50,10 @@ class Container(object):
     def name(self):
         return self.dictionary['Name'][1:]
 
+    @property
+    def name_without_project(self):
+        return '_'.join(self.dictionary['Name'].split('_')[1:])
+
     @property
     def number(self):
         try: