fix a couple of typos
Merge pull request #456 from ghedamat/mattia/typos

fix a couple of typos
Update "Getting Started" section

Let users install bower before running `npm install` as it runs
`bower install` in its postinstall hook.
Merge pull request #460 from potomak/gh-pages

Update "Getting Started" section
Create tables using markdown

Using markdown to create tables, table content is also parsed as markdown.
Merge pull request #461 from potomak/gh-pages

Create tables using markdown