[1.0] Add support for removing nodes

[m4rrc0]

If I delete a page I have to manually delete the .cache folder (Alpha13)

[KyleAMathews]

Ooooo... you're right, I forgot about this TODO

gatsby/packages/gatsby-source-filesystem/src/gatsby-node.js

Line 98 in 0124901

// TODO add delete support.

There needs to be a new DELETE_NODE redux action created which handles this and have the filesystem plugin implement that... if this is something you could take on, that'd be really helpful!

[KyleAMathews]

Working on this now

[KyleAMathews]

Fixed now. Will release another alpha after #862 is fixed. In the meantime, I published a canary with this PR (just change the version of gatsby packages in your package.json to "canary").

[justinfriebel]

I just ran into this trying out the gatsby-starter-blog. If there is a way for me to help and implement it there and I can try a PR.