Fix gofmt compability

[jonaz]

Resolves: #106

[jcchavezs]

Would you be up to add a gofmt check in the generated example on CI (see https://github.com/rakyll/statik/blob/master/.travis.yml#L13)?

[jonaz]

Would you be up to add a gofmt check in the generated example on CI (see https://github.com/rakyll/statik/blob/master/.travis.yml#L13)?

done!

[jcchavezs]

I am not sure this is needed because you use the literal "web" here but if you really need this constant then it should be private.

[jonaz]

I only ran whats in .travis.yml and it generated that file. ( ./statik -f -src=./example/public -dest=./example/ -include=*.jpg,*.txt,*.html,*.css,*.js -ns=web)