Shortcode cleanup. Added a ton of tests. Much more flexible with input. Doesn't crash with bad input. Fixed #193

Also added the .Get function to short codes and documentation for that function.
Reorganization of helpers. Centralized Url/Path logic. Fixed #175.
updating the intro page
Add Kieran Healy's website.
Make per-page url overrides take precedence over section permalink settings

This seems more reasonable to me.

I didn't understand why the pUrl comparision was on len > 2; I changed it to 0.

Closes #212.
Make error message when encountering unrecognized file extensions more helpful
Ignore content files ending in ~

Also add *~ to .gitignore
Add test for ignoring ~$ files
Fixing issues go vet reports.
bumping version for 0.10
Adding the right date for the release of 0.10
Bumping version to v0.11-dev
Also ignore Emacs lock & recovery files.
Parallelizing the largest build processes (templates, pages, indexes). Seeing 300%+ improvement of total build time.
Add sort pages by Title and by LinkTitle

Sorting can now be done on Title and on LinkTitle
Order ByTitle and ByLinkTitle added

Added documentation for new order possibilities
clearer pseudo command in quickstart doc

- previously it was ambiguous between the actual Step 1 and the "step 1" of the steps *within* Step 2 ("Clone into the hugo repository")

- also fixed a typo I guess
fix typo of readme
Add www.heyitsalex.net to Community Showcase.
Optimizing thumbnail & preview images