Add tips & tricks for Ipopt

[bchretien]

cc @jorisv

Ipopt is extremely powerful and its RobOptim plugin is probably the most famous one. Still, in order to achieve good performances and provide good results, some Ipopt parameters need to be tweaked. Based on our collective experience, we should provide a set of parameters that should be tested and tuned by RobOptim users, and explain all of this in the Wiki.

[thomas-moulard]

Please, include this in the mainstream RobOptim distribution, I find this page very interesting.

I see three ways to include it:

a. Doxygen

• Pros: documentation is distributed/installed with the plug-in as well as online (the documentation is automatically uploaded to gh-pages)
• Cons: low visibility (may be enhanced by putting links on the website), difficult to make it attractive to read, markup is painful

b. GitHub wiki:

• Pros: easy to edit
• Cons: not available offline, no MathJax, Doxygen+wiki+website is too many places to look for information IMHO

c. Website:

• Pros: not too difficult to write, high visibility, MathJax
• Cons: not available offline / not bundled with RobOptim plug-in

Right now, I would go for c. Doxygen now has Markdown support so it probably could be possible to mix a. and c. so that we can share content in an easy way between the software documentation and website.

If you agree with that, could you open a PR for roboptim.github.com or otherwise could you please at least migrate this content to the roboptim organization? I am not sure how PR / fork behave with wiki though.

Thanks for your work!

edit: it already is on the RobOptim organization wiki so sorry for the noise. Please try to add a link on the site or migrate this to MarkDown then ;)

[bchretien]

I was counting on @jorisv to help me fill it up, afterwards we can move this wherever is more suitable.