Extend fetch examples

[mskocik]

Show example with new fetchProps and with customizable requeetFactory

[wykhuh]

It took me several hours to figure out how to use this plugin. Improving the docs would speed up the process of using the plugin.

1. In the current docs, there are partial code samples with a working select.

2. There are working select but no code sample.

3. There are code samples with no working select.

It would be helpful to have a code sample with working select so people can see a working demo and the code used to create the demo.