Update build scripts

- Add RestClientBase to import
- Add notes to scripts
Merge branch 'master' into proxy-functionality
Add proxy functionality
Use 408 for request timeout
Merge branch 'master' into proxy-functionality

Conflicts:
	specs/Excel-REST - Specs.xlsm
	src/RestClient.cls
	src/RestClientBase.bas
Add RestClient.SetProxy method
Merge pull request #12 from timhall/proxy-functionality

Add simple proxy functionality with RestClient.SetProxy