Use Paket for package management in templates

[gsomix]

Closes #6

I'm experimenting with Paket-based projects for dotnet templates. Still need to work. After that I will update NuGet package.

• [x] Move rendering templates to Paket
• [x] Move UI templates to Paket
• [x] Make meaningful .gitignore
• [x] Update README with instructions for work with Paket

Questions:

• As Paket introduces opinionated structure of project (unlike simple NuGet-based projects that can be added into any existing solution) should be solution file also included in templates? Or even better to make it as an option (e.g. like in Giraffe template)?
• What minimal set of dependencies the paket.dependencies should contains?

[gsomix]

@haraldsteinlechner Hey, do you mind if I label it as hacktoberfest-accepted?

[haraldsteinlechner]

absolutely

[haraldsteinlechner]

@gsomix this should be complete repalcement of nuget packages - am i right?