Small documentation update on Injector

app/src/main/java/org/bspeice/minimalbible/Injector.java

@@ -1,7 +1,8 @@
 package org.bspeice.minimalbible;
 
 /**
- * Created by bspeice on 7/2/14.
+ * Define a simple interface for classes to receive an object to provide their dependencies.
+ * This way, the dependencies can be provided by an activity, or a test module, etc.
  */
 public interface Injector {
     public void inject(Object o);