Fix #20
Merge pull request #21 from cosmoharrigan/attention

Fix #20 - query string for AttentionalFocus filter
Capture attentional focus timeseries with Scheme representation
Add example usage
Merge pull request #22 from cosmoharrigan/af

Capture attentional focus timeseries with Scheme representation
Update export API
Update README
Update README
Merge pull request #23 from cosmoharrigan/attention

Update attention export API
Created example using socrates data and agent for experimentation