Update README since Kompose is now Go gettable
Update README since Kompose is now Go gettable

Since You're now able to install Kompose via `go get`. Update the README
accordingly.

skippbox/kompose,surajnarwade/kompose,ashetty1/kompose,containscafeine/kompose,procrypt/kompose,skippbox/kompose,ashetty1/kompose,cdrage/kompose,kubernetes/kompose,ngtuna/kompose,rupalibehera/kompose,surajnarwade/kompose,sebgoa/kompose,gitlawr/kompose,kadel/kompose,surajnarwade/kompose,sebgoa/kompose,sebgoa/kompose,kubernetes/kompose,rupalibehera/kompose,containscafeine/kompose,skippbox/kompose,containscafeine/kompose,procrypt/kompose,cab105/kompose,cab105/kompose,gitlawr/kompose,cdrage/kompose,cab105/kompose,procrypt/kompose,ashetty1/kompose,ngtuna/kompose,gitlawr/kompose,kadel/kompose,ngtuna/kompose,rupalibehera/kompose