Clean-up the landing Readme.md

[EricBoix]

• some sections have FIXMEs
• the section describing the modules could be the default menu
  that the application loads (and pointed in the docs)

[valentinMachado]

resolve by this PR => VCityTeam/UD-Viz#223 ?

[EricBoix]

@valentinMachado My understanding of UD-Viz is that it is a component (package) used by UD-Viz-Template whereas UD-Viz-Template is an application (using/build-on UD-Viz). Hence UD-Viz-Template/Readme.md should decribe how to derive your application which is information that doesn't belong into the UD-Viz package documentation. If your comment doesn't fall into this viewpoint, could you please be more specific about what in this VCityTeam/UD-Vuiz#223 PR solves the present issue ? (because that PR is a quite heavy and it modifies 50+ files)

[valentinMachado]

@EricBoix To be honest I don't remember why I thought this PR was solving this...

You're right the point of this repository is to propose to an ud-viz user a template architecture for its application.
Since ud-viz has quite changed with the version 3.0.0 (https://github.com/VCityTeam/UD-Viz/releases/tag/v3.0.0) and now includes 3 packages (shared/browser/node), this repository needs to be refacto as well.
This issue should be resolved after/while this one #44

I am currently working on this issue (VCityTeam/UD-Imuv#406), to adapt the application UD-IMUV with the new ud-viz version, which is more or less the same work. We should then be able to refacto this repository, so the user can implements an ud multiplayer game (as UD-IMUV) or an usual application (as AllWidget template). We could also think to include test pattern, devel workflow, documentation generation, coding style like on ud-viz.

[EricBoix]

My understanding is that @mathieuLivebardon is currently working on this issue as part of this branch. @mathieuLivebardon Since I contributed to the original version don't hesitate to solicit my input on this matter when reviewing the upcoming PR.