Improving convert-from-nuget command - WIP
Added --force flag to convert-from-nuget
Refactoring
reading packageSources from nuget.config
updated docs
removed buggy safeDeleteDir and safeDeleteFile
Revert "Retrieve FSharp.Core via official nuget package"

This reverts commit ff1a3221cc0dbb20c5dea18be3bb601f1f2047b5.

Conflicts:
	paket.lock
Merge pull request #120 from theimowski/convert_from_nuget_command

Enhancements for convert from nuget command
Merge branch 'master' of https://github.com/fsprojects/Paket
Bump version to 0.2.6
Use a bootstrapper