Docs integration

[coolbreeze413]

PR to complete docs integration to master.
This a draft PR, until:

1. PRs for other repos are merged to the respective master branches from the corresponding docs-integration branch:

   1. qorc-example-apps

      • Docs integration  qorc-example-apps#1

   2. qorc-test-apps

   • Additional m4only fpgaonly testapps qorc-testapps#3 (adds standalone fpga, standalone m4 test apps) followed by
   • Docs integration qorc-testapps#4 (update documentation)
   • both PRs combined and merged to master

   3. s3-gateware

      • replace markdown with rst files s3-gateware#27
      • (this repo does not seem to be updated to the master branch (or other branch tip) in qorc-sdk submodule)

   4. TinyFPGAProgrammer-Application

      • updated, no PR at this time.

   5. quick-feather-dev-board

      • updated, no PR at this time.

   6. quicklogic-fpga-toolchain

      • fpga-bootloading-changes-phase-1-PR-4 quicklogic-fpga-toolchain#50 (tutorial changes for binary generation) followed by
      • docs integration : update markdown to rst and add additional info quicklogic-fpga-toolchain#52 (readme md - rst and update steps)
      • both merged to master

2. The docs are compiled and tested against readthedocs, from the docs-integration branch

3. Update the submodules to their latest master branches, currently pointing to each submodules' docs-integration branch

4. Review of changes is approved.

At this point, convert draft PR to ready, and merge.

[coolbreeze413]

docs build on RTD seems ok, https://qorc-sdk.readthedocs.io/en/latest/
Added badges on main readme to show both travis-ci and readthedocs build status on master.