Issue alecthomas/gometalinter#118 - add client9/misspell

[client9]

This adds https://github.com/client9/misspell Since it applies to English (which is not required by golang) and possibility of false positives, it is disabled by default. This matches gofmt and lll. But happy to make it on-by-default.

To test,

first remove misspell if it exists

rm `which misspell`

test install

go run main.go --install --update
which misspell

test lint by making junk.go that contains something like // TOOD: write code

go run main.go -enable misspell .

You should get something like this:

junk.go:3:3:warning: found "TOOD:" a misspelling of "TODO:" (misspell)

onward!

n

[alecthomas]

Excellent. I think disabled by default makes sense for misspell, thanks!