add help text regarding current working directory
closes https://github.com/Strider-CD/strider/issues/445
Merge pull request #16 from keyvanfatehi/pwd_help

add help text regarding current working directory
0.5.3
Strip out comments when building shell command
v0.5.4
Add node badge & remove unused section
Ensure custom steps fail if any command fails
Merge pull request #18 from Strider-CD/exit-on-error

Ensure custom steps fail if any command fails
Added ability to run custom commands in Windows
Rebased
Merge branch 'master' of https://github.com/abe545/strider-custom

Conflicts:
	worker.js