Making APIs consistent

Formerly, data binding builders had activity, bakuActivity, and
vActivity properties, while syncgroup builders had overloaded activity
properties. To normalize the API, let's just use overloads for both cases.

Change-Id: Iaf698c93b2911b03ce01d2772e5bc00892bf5086
diff --git a/baku-toolkit/lib/src/main/java/io/v/baku/toolkit/BakuActivityMixin.java b/baku-toolkit/lib/src/main/java/io/v/baku/toolkit/BakuActivityMixin.java
index 31e3082..79975d6 100644
--- a/baku-toolkit/lib/src/main/java/io/v/baku/toolkit/BakuActivityMixin.java
+++ b/baku-toolkit/lib/src/main/java/io/v/baku/toolkit/BakuActivityMixin.java
@@ -117,11 +117,11 @@
 
     public <U> SyncbaseBinding.Builder<U> binder() {
         return SyncbaseBinding.<U>builder()
-                .bakuActivity(this);
+                .activity(this);
     }
 
     public CollectionBinding.Builder collectionBinder() {
         return CollectionBinding.builder()
-                .bakuActivity(this);
+                .activity(this);
     }
 }
diff --git a/baku-toolkit/lib/src/main/java/io/v/baku/toolkit/bind/BaseBuilder.java b/baku-toolkit/lib/src/main/java/io/v/baku/toolkit/bind/BaseBuilder.java
index f1e925e..64ba08a 100644
--- a/baku-toolkit/lib/src/main/java/io/v/baku/toolkit/bind/BaseBuilder.java
+++ b/baku-toolkit/lib/src/main/java/io/v/baku/toolkit/bind/BaseBuilder.java
@@ -40,13 +40,13 @@
     /**
      * Sets the following properties from the given {@link BakuActivityTrait}:
      * <ul>
-     *     <li>{@code activity}</li>
-     *     <li>{@code rxTable}</li>
-     *     <li>{@code subscriptionParent}</li>
-     *     <li>{@code onError}</li>
+     *     <li>{@link #activity(Activity)}</li>
+     *     <li>{@link #rxTable(RxTable)}</li>
+     *     <li>{@link #subscriptionParent(CompositeSubscription)}</li>
+     *     <li>{@link #onError(Action1)}</li>
      * </ul>
      */
-    public T bakuActivity(final BakuActivityTrait<?> trait) {
+    public T activity(final BakuActivityTrait<?> trait) {
         return activity(trait.getVAndroidContextTrait().getAndroidContext())
                 .rxTable(trait.getSyncbaseTable())
                 .subscriptionParent(trait.getSubscriptions())
@@ -56,11 +56,11 @@
     /**
      * Sets the following properties from the given {@link VAndroidContextTrait}:
      * <ul>
-     *     <li>{@code activity}</li>
-     *     <li>{@code onError}</li>
+     *     <li>{@link #activity(Activity)}</li>
+     *     <li>{@link #onError(Action1)}</li>
      * </ul>
      */
-    public T vActivity(final VAndroidContextTrait<? extends Activity> trait) {
+    public T activity(final VAndroidContextTrait<? extends Activity> trait) {
         return activity(trait.getAndroidContext())
                 .onError(ErrorReporters.getDefaultSyncErrorReporter(trait));
     }