Page completed
Page completed
Pictures were moved to doc/assets/img
Links to the pictures were changed.
Merge branch 'doc-windows-installer' of https://github.com/bura/groovy-core into doc-windows-installer

Conflicts:
	src/spec/doc/windows-nsis-installer.adoc
Merge pull request #227 from bura/doc-windows-installer

GROOVY-6268: New page "Windows NSIS-Installer" added