Update README.md

Add Running Locally instructions
Couple of minor UI tweaks to improve readability
Merge pull request #22 from twokul/ui-tweaks

Couple of minor UI tweaks to improve readability
Decreases CodeMirror's font size

From 16pt to 14px
Merge pull request #23 from twokul/code-mirror-font-size

Decreases CodeMirror's font size
Remove applyAuthorStyles. It is not part of the spec anyways.
Fix styling and tooltips for native ShadowDOM

Remove dead apply-author-styles which is not supported by the ShadowDOM
anymore
Hack inside jQuery’s offset() method to make it work with Shadow DOM
(which fixes positioning of tooltips and popovers)
Moving to a polymer 0.10.0
Remove stale web/
Roll dependencies forward to polymer 0.10.0-pre.10
Finish move to the newest polymer 0.10.0-pre.10

Now works both in Dartium and Canary and Beta
Allow Phi's with no variable index in the hydrogen
Remove decoration from assembly drop down
Quick prototype of source annotations over IR