Updated lwjgl dependencies to version 3.0.0b

jme3-lwjgl3/build.gradle

@@ -11,5 +11,5 @@ repositories {
 dependencies {
     compile project(':jme3-core')
     compile project(':jme3-desktop')
-    compile files('lib/lwjgl-3.0.0b-35.jar', 'lib/lwjgl-3.0.0b-35-natives.jar')
+    compile 'org.lwjgl:lwjgl:3.0.0b'
 }