Fix bind setting

The bind setting from the yaml file was not read. This commit fixes this
issue.

cmd/weblug/config.go

@@ -16,7 +16,7 @@ type Config struct {
 }
 
 type ConfigSettings struct {
-	BindAddress string // Bind address for the webserver
+	BindAddress string `yaml:"bind"` // Bind address for the webserver
 }
 
 type Hook struct {

weblug.yaml

@@ -2,7 +2,8 @@
 ## Weblug example config
 
 settings:
-  bind: ":2088"             # bind address for webserver
+  bind: "127.0.0.1:2088"    # bind address for webserver
+  #bind: ":2088"            # bind to all addresses
 
 # hook definition. A hook needs to define the HTTP endpoint ("route") and the
 # command that will be executed, once this route is executed