pardom/ActiveAndroid — pull request #214 by markuspfeiffer (2014-04-16 11:37:19+00:00)
Title: Add support for count/exists queries.

This pull request adds support for both exists and count.

```
// Get the number of rows that match the where-clause
final int count = new Select()
.from(Entity.class)
.where("...")
.count();

// Get a boolean value that indicates if any rows exist that match the where-clause
final boolean exists = new Select()
.from(Entity.class)
.where("...")
.exists();
```