Explicitly set snake-case name for multi-word config keys

.gitignore

@@ -1 +1,4 @@
 matrix-pretix
+
+*.json
+*.sqlite3

internal/config/config.go

@@ -16,17 +16,17 @@ type DatabaseConfig struct {
 }
 
 type MatrixConfig struct {
-	AllowedRooms	[]string
-	DisplayName	string
-	LogLevel	uint
-	HomeserverURL	string
-	UserIdentifier	string
+	AllowedRooms	[]string	`json:"allowed_rooms"`
+	DisplayName	string		`json:"display_name"`
+	LogLevel	uint		`json:"log_level"`
+	HomeserverURL	string		`json:"homeserver_url"`
+	UserIdentifier	string		`json:"user_identififer"`
 	Password	string
-	PickleKey	string
+	PickleKey	string		`json:"pickle_key"`
 }
 
 type ServerConfig struct {
-	ListenAddress	string
+	ListenAddress	string	`json:"listen_address"`
 }
 
 func ParseFromFile(path string) (config *Config, err error) {