The current installation guide for `use-package` is missing a setting
for `evil-org-agenda`. This PR adds it so that we can simply copy and
paste the installation guide to our config file :)

* org-agenda: Init

* org-agenda: Require evil and org

* org-agenda: Bind org-agenda-redo-all to "gR" to match org-agenda-redo

* org-agenda: Document setup and include table of bindings

* Use "s" for filtering and "~" to toggle marks

* org-agenda: Make HJKL and M-<hjkl> consistent with defaults

Former bindings were leftovers of a previous experimentation.

* org-agenda: Bind "*" to mark all

* README: Add Emacs default bindings to the org-agenda table

* org-agenda: Bind "pe", "pt" to org-agenda-set-* and "o" to org-timer-set-timer

"z" conflicts with the dispatcher.

* org-agenda: Disable the todo-*set functions

* org-agenda: Move the "set" functions to the "c" prefix (for "[c]hange")

* org-agenda: Bind org-agenda-date-prompt and org-agenda-show-the-flagging-note

* org-agenda: Follow evil-collection rationale

- Use "gj" and "gk".
- Use S-RET to "open in other window" and "M-RET" to "display in other window".
- Leave "o" free as it is often recommended for sorting.

* org-agenda: Bind C-S-h/C-S-l to org-agenda-todo-*set

* README.org: Update org-agenda table

Cherry-picked from NicholasTD07-patch-1

Author: Nicholas T <NicholasTD07@users.noreply.github.com>
Date:   Sun Aug 6 14:08:34 2017 +1000

    Explain how to fix `TAB` not working as expected

    `TAB` won't work as expected in some cases. All you have to do is disable `evil-want-C-i-jump`.

Author: Somelauw <Somelauw>
Date:   Tue Aug 8 12:59:43 2017 +0200

    Add heading "common issues" above tab-explanation

- More use of markup.
- Table cells use lowercase letters.
- More explanation on what the different text objects do

Also add worf to "See Also" in README.md

The evil repository has migrated from bitbucket to github.

Correct name of evil-org-mode in See Also