search for images with various filters, all settings saved.

All required user stories for Image Search are completed.

The following advanced user stories are completed

Robust error handling, including network connectivity. See first gif.

Users can share an image to friends or email to themselves

Found a way to share an image without requiring changes to 3rd party libs or doing FileIO

Updated the Cliff's Note section, to present that approach. I wrote new section "Sharing Remote Images (without explicit file IO)" in https://github.com/thecodepath/android_guides/wiki/Sharing-Content-with-Intents

Looked at adding a 3rd party library, but the docs are not enough for me. Looked at/worked on StaggeredGridView, and TouchImageView, without good final result