fixed typo in manifest file

Author: codeanticode

src/processing/mode/android/Manifest.java

@@ -182,7 +182,7 @@ private void writeBlankManifest(final File file) {
     // activity/android:name should be the full name (package + class name) of
     // the actual activity class. or the package can be replaced by a single
     // dot as a prefix as an easier shorthand.
-    writer.println("    <activity android:name=\".MainActivity\">");
+    writer.println("    <activity android:name=\".MainActivity\" ");
     writer.println("              android:theme=\"@android:style/Theme.NoTitleBar\">");
     writer.println("      <intent-filter>");
     writer.println("        <action android:name=\"android.intent.action.MAIN\" />");