Functionality improvements

[stephlocke]

• ~#18 Tweaking a recent PR to support urls like example.com/blog~

• 19 Allowing custom CSS to be provided.

  • Amended partial htmlhead.html
  • Incorporated into exampleSite
  • Updated README to reflect location of example code

• 21 Improve SEO and social presence

  • Amended partial htmlhead.html
  • Incorporated into exampleSite

• 23 Allow up to 15 pages of posts (important for folks migrating a long-running blog)

  • Amended index.html
  • Added guidance to README noting limitation and a workaround

WIP PR I'm currently implementing this theme on one of my sites so may come across other features that it'd be nice to have included.

[pmviva]

@stephlocke regarding #18 there's no need to use .Site.BaseURL directly, using {{ "/" | relURL }} or {{ "/" | relLangURL }} is enough to have the .Site.BaseURL into account.

Besides I made a pull request (that haven't been approved yet) in order to enable multillingual support, having .Site.BaseURL doesn't take multilingual mode into account as you are not having language aware URLs.

[curtiscde]

Closing due to inactivity.