Add missing underscore to level environment variable

Author: code-asher

package.json

@@ -5,7 +5,7 @@
 		"prepare": "tsc",
 		"test": "jest"
 	},
-	"version": "1.1.8",
+	"version": "1.1.9",
 	"main": "out/index.js",
 	"types": "out/index.d.ts",
 	"author": "Coder",

src/logger.ts

@@ -243,7 +243,7 @@ export class Logger {
 			this.nameColor = this.hashStringToColor(name);
 		}
 		if (typeof process !== "undefined" && typeof process.env !== "undefined") {
-			switch (process.env.LOGLEVEL) {
+			switch (process.env.LOG_LEVEL) {
 				case "trace": this.level = Level.Trace; break;
 				case "debug": this.level = Level.Debug; break;
 				case "info": this.level = Level.Info; break;