Merge pull request #20 from ahpook/master

Simplify the templates directory; add writing prompts
Update ARM-2. Iteration to 0.2.0

This is a new, reworked version of the proposal. It uses the new
template and more clearly separates the recommended solution from the
alternatives.
Merge pull request #21 from hlindberg/master

Update arm-2.iteration to 0.2.0
Fix bad links to Expression Based Grammar.

Also adds an intro to Expression Based Grammar in the main document.
Fix header level issue.
Merge pull request #22 from hlindberg/master

Fix links and header levels arm-2
Change to main index.
Update README.md
Update README.md
Update README.md
Make index a table.
Merge pull request #23 from hlindberg/master

Update Readme Index.
Correct one example (missing an assignment).
Improve language in "Passing Lambdas in Calls"
Revise arm-2.iteration wrt. 'discussion', and 'uncompleted call'

Also fix typos, remove some duplicated text.
Update arm-2.iteration metadata and index.
Merge pull request #24 from hlindberg/master

update arm-2.iteration to 0.2.1 in posted state
Add technical description of ARM-11: Execution Model

I have not yet written the supplementary sections on testing/evaluation,
alternatives, etc, but I wanted to publish this more widely now that the
technical description is substantively complete so it could get wider exposure
and commentary.

Closes #26.