red: change BauPack to be a task builder
green: change BauPack to be a task builder
#27 red: added Bau.Test.Acceptance/Plugins/Exec
immunised tests against System.IO and file system race conditions
#27 green: implemented Bau.Test.Acceptance/Plugins/Exec
#27 refactor: rationalised inheritance graph and added BauPackFacts
#27 refactor: renamed TaskBuilder to BauPack
refactor: removed redundant TODOs and made Task.Execute public
#27 refactor: split ExecTask into separate plugin
Merge pull request #32 from adamralph/27

#27 exec plugin
updated to 0.1.0-alpha04 and fixed Bau.Exec.nuspec title
Merge pull request #33 from adamralph/alpha04

updated to 0.1.0-alpha04 and fixed Bau.Exec.nuspec title
#30 added CONTRIBUTING.md
Merge pull request #38 from adamralph/contributing

added CONTRIBUTING.md
#30 added bau.128.png
Merge pull request #39 from adamralph/logo

#30 added bau.128.png
#30 added link to contributing.md from README.md and logo
Merge pull request #40 from adamralph/readme

#30 added link to contributing.md from README.md and logo
credited logo to Vanja
Merge pull request #41 from adamralph/logo-credit

credited logo to Vanja
fixed nuspec descriptions, project URLs and icon URLs