Add FunSwiftConf to README
Revert "Remove pure vs. impure testing discussion"

This reverts commit 00ffd872b4a76cb5c3df6c1e2f15688fe0a213b6.
Revert "Remove Core Data testing slide"

This reverts commit 448a31f061bea078658bd8ef25a561958894bcb9.
Revert "Cut out pure vs. impure testing example"

This reverts commit c29b5b99227d6feced777450163b61c3d0d46fe1.
Revert "Put a “functional programming” on it"

This reverts commit 704a21470b21206361a10fa1542867059ffb631a.
Revert "Refactor talk intro to fit conference topic better"

This reverts commit 055fefa7396e356e69cb7c9266914f5a6fdd7393.