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:

fig/service.py

@@ -207,10 +207,11 @@ class Service(object):
             return max(numbers) + 1
 
     def _get_links(self):
-        links = {}
+        links = []
         for service in self.links:
             for container in service.containers():
-                links[container.name] = container.name
+                links.append((container.name, container.name))
+                links.append((container.name, container.name_without_project))
         return links
 
     def _get_container_options(self, override_options, one_off=False):