fix(router): gzip content types syntax fixed

gzip content types are only whitespace separated
fixed missing table on http://docs.deis.io/en/latest/managing_deis/router_settings/
docs(deisctl): add unit search paths behavior to README
fix(CHANGELOG): use SSL for github and recreate change entries
fix(readme): use relative link to deisctl in repo
Merge pull request #1939 from johanneswuerbach/patch-5

fix(router): gzip content types syntax fixed
Merge pull request #1946 from gabrtv/fix-deisctl-link

fix(readme): use relative link to deisctl in repo
Merge pull request #1943 from mboersma/redo-changelog

fix(CHANGELOG): use SSL for github URLs, recreate change entries
Merge pull request #1941 from mboersma/deisctl99-doc-search-paths

docs(deisctl): add unit search paths behavior to README
fix(deisctl): install only deisctl

./... means "this and all subpackages", but we only want to build
`deisctl`. The other problem seems to be that ./... doesn't actually
drop the main binary in the root.
Merge pull request #1950 from bacongobbler/build-deisctl

fix(deisctl): install only deisctl