Go 1.X support

[palsivertsen]

From readme:

This fork should work for all versions of Go >= 1.8

However go get fails on Go1.8:

$ docker run --rm -it golang:1.8
root@979761930cff:/go# go get -u github.com/mdempsky/gocode
# golang.org/x/tools/go/internal/gcimporter
src/golang.org/x/tools/go/internal/gcimporter/bexport.go:212: obj.IsAlias undefined (type *types.TypeName has no field or method IsAlias)

Go1.9 seems to work fine.

Looking at #73 seems readme should be updated to say "Go >= 1.9"

[stamblerre]

You're right, thanks for pointing that out.

[stamblerre]

Fixed by fa5c674.