Set Redis host using cheat.sh config framework

https://github.com/chubin/cheat.sh/blob/f5d5fae71218e771e84b896600b2504c0d8814ec/lib/config.py

.travis.yml

@@ -14,4 +14,4 @@ script:
   - curl http://localhost:8002
   - docker-compose logs --no-color
   - docker logs chtsh
-  - REDIS_HOST=http://redis:6379 CHEATSH_TEST_STANDALONE=NO bash tests/run-tests.sh
+  - CHEATSH_TEST_STANDALONE=NO bash tests/run-tests.sh

docker-compose.yml

@@ -6,6 +6,8 @@ services:
     container_name: chtsh
     depends_on:
       - redis
+    environment:
+      - CHEATSH_REDIS_HOST=redis
     ports:
       - "8002:8002"
   redis:

tests/run-tests.sh

@@ -2,10 +2,10 @@
 
 # 1) start server:
 #   without caching:
-#       REDIS_HOST=None CHEATSH_PORT=50000 python bin/srv.py
+#       CHEATSH_REDIS_HOST=None CHEATSH_PORT=50000 python bin/srv.py
 #       (recommended)
 #   with caching:
-#       REDIS_PREFIX=TEST1 CHEATSH_PORT=50000 python bin/srv.py 
+#       CHEATSH_REDIS_PREFIX=TEST1 CHEATSH_PORT=50000 python bin/srv.py
 #       (for complex search queries + to test caching)
 # 2) configure CHTSH_URL
 # 3) run the script