v0.0.4 pre-release, much closer to v1.0.0

Enhance:

• separate "error()" to handle error msg
• use "run()" to handle general cmds with error msg
• show total time spent for each build
• show start and end datetime locally
• print repo path when not found
• add timeout support, default=600 secs, close #16
• handle submodule update/initial, fix #14
• add new file GitHub.repos.meta.json in artifacts
• do npm update after npm install
• run npm test before building the meta data/artifacts
• set finish message to "Success" level
• write callee command to log
• add $logPath to save logfile at custom path, cc #6
• add $logMode to decide clean the log or not, cc #6

Fixes:

• adj repository reset / pull / fetch order, cc cdnjs/cdnjs#5564
• should reset website repo before building artifact

Adjustment:

• update var name in config
• update npm install behavior
• update meta branch rebase behavior

Documentation:

• Update readme.md

And some minor bug fixes and adjustments.