Update README.md
* Use (deactivate-mark t) and (activate-mark) instead of manipulating mark-active directly.
no message
* Rename `hl-fg-colors' to `hl-highlight-foreground-colors'; `hl-bg-colors' to `hl-highlight-background-colors'.
   Note: Users should follow this change!
* Support `hl-highlight-thingatpt-global' and `hl-unhighlight-all-global'.
no message
* Fully support for global highlights.
* Support `hl-save-highlights` and `hl-restore-highlights`.
Update README.md
Update README.md
* Update document.
Update hl-anything.el
Merge pull request #5 from boyw165/todo

Implement global highlights and save&restore.