Created Build Variants (markdown)

Build-Variants.md

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+# Jitpack repository (default)
+
+The library is typically consumed from jitpack.io with:
+
+    dependencies {
+        implementation 'com.github.mik3y:usb-serial-for-android:2.x.y
+    }
+
+When pushing to github with jitpack enabled, 
+__*.aar__ and __*-sources.jar__ are automatically published by jitpack, 
+even if no `maven` or `maven-publish` gradle plugin is used. 
+
+# Jar
+
+If you need a jar file (e.g. for cordova) run gradle task `createFullJarRelease` and use __full.jar__
+ 
+# Local maven repository
+
+To use a local maven repository (e.g. for testing new library version) comment in
+
+    //apply from: 'publishToMavenLocal.gradle'
+
+set correct version and run gradle task `publishToMavenLocal`. 
+This include file is not enabled by default, as it confuses jitpack