Added .idea folder to .gitignore for PyCharm users

[dhirschfeld]

No description provided.

[Nodd]

That's not very informative. Do you at least have a link explaining why it's useful ?

[cjrh]

The PyCharm IDE uses a hidden folder .idea/ to keep "project information and settings" for the IDE. If .idea/ is not added to .gitignore, you keep getting asked whether you want to add things like vcs.xml to version control. This is one of the files within the .idea/ folder. I'm personally neutral on this PR, even though I've started using PyCharm, but that's the basic background.

[dhirschfeld]

As @cjrh mentions it's the folder reserved for PyCharm specific settings so shouldn't be committed to the repo.

This PR simply adds that folder to the .gitignore file which improves the development experience for PyCharm users hence lowering the barrier to contribution (in an admittedly small way).

[Nodd]

Oh sorry, I thought that it was an issue instead of a pr. I'm fine with it then.

[ccordoba12]

I'm fine with this. No problem with our contributors using other IDEs to develop Spyder, though I'd prefer them to use Spyder itself to do it ;-)

[cjrh]

@ccordoba12 Think of it as "IDE bootstrapping" 😉