assume release = true if local.properties does not exist

Author: fabmax

buildSrc/src/main/kotlin/LocalProperties.kt

@@ -3,7 +3,7 @@ import java.io.File
 import java.util.*
 
 class LocalProperties private constructor(file: File) : Properties() {
-    val isRelease: Boolean get() = getProperty("physxjni.isRelease").toBoolean()
+    val isRelease: Boolean get() = getProperty("physxjni.isRelease", "true").toBoolean()
 
     init {
         if (file.exists()) {