Update README.md header name
Update README.md badge links

Update README.md badge links to reflect repository renaming.
Update categorised post links

Update categorised post links so that links redirect to the appropriate
blog post correctly.
Use FontAwesome icons in sidebar

Use FontAwesome icons in sidebar instead of CSMB icons; remove csmb and
ionicons styling, update FontAwesome version. Fixes #10.
Merge remote-tracking branch 'origin/master' into gh-pages