Merge pull request #49 from hhzl/master

listed grunt as tool, renamed sections
Add 'Other examples section'

fixes #46
Amber on the command line

see discussion https://github.com/hhzl/amber-examples/commit/15d902f0b2dcf172b6200ef130d123dae5d76988#commitcomment-7999910
Update README.md

Referred to a v0.13 example