renamed stuff

added first gamma correction, closes #1
added db upgrade logic

ledd/sql/ledd.sql

@@ -5,13 +5,16 @@ CREATE TABLE `stripes` (
 	`controller_id`	INTEGER,
 	`channel_r`	INTEGER,
 	`channel_g`	INTEGER,
-	`channel_b`	INTEGER
+	`channel_b`	INTEGER,
+	`channel_r_gamma` REAL DEFAULT 2.8,
+	`channel_g_gamma` REAL DEFAULT 2.8,
+	`channel_b_gamma` REAL DEFAULT 2.8
 );
 CREATE TABLE "meta" (
-	`option`	TEXT,
-	`value`	TEXT
+	`option` TEXT,
+	`value` TEXT
 );
-INSERT INTO `meta` VALUES ('db_version','1');
+INSERT INTO `meta` VALUES ('db_version','2');
 CREATE TABLE "controller" (
 	`id`	INTEGER PRIMARY KEY AUTOINCREMENT UNIQUE,
 	`address`	TEXT,