Merge pull request #20 from seblucas/env-var-config-2

Add support for environment variable to load the configuration

src/yamlparser.py

@@ -1,4 +1,5 @@
 import yaml
+from os import environ
 import logging
 
 _LOGGER = logging.getLogger(__name__)
@@ -6,6 +7,9 @@ _LOGGER = logging.getLogger(__name__)
 
 def load_yaml(file):
     try:
+        if environ.get("AQARA_MQTT_CONFIG") is not None:
+            stram = environ.get("AQARA_MQTT_CONFIG")
+        else:
             stram = open(file, "r")
         yaml_data = yaml.load(stram)
         return yaml_data