Improvement to deployment

[Matthewar]

I have changed the deployment script to include additional information on the build along with copying the included docs into the pages branch (and therefore onto the ASV github pages site).

Test for this deployment script as part of the refactor in commit 379803f.
However this build failed because of issue #53.
Aforementioned issue requires fix before this can be tested.

Once this deployment script has been tested properly, need to undo the effects of the testing commit - only allowing deployments on master - and then this issue can be resolved.

[Matthewar]

Issue blocking fix has been closed, however build didn't run deployment, changing .travis.yml again to attempt to test.

[Matthewar]

Successfully built and deployed in build #33.
Changes to be made:

• Links in Other Pages section of main README.md are incorrect, need to have extension .html instead of .md
• Only allow deployments on master branch (undo commit 379803f)