v0.5.0

Changelog

53792cb Merge pull request #27 from replicatedhq/create-promote-version
85a1083 fix tests
4ae6811 migrate to mono-swagger-spec
c7d8006 add release-promote flags to release-create --promote
a04c543 Merge pull request #24 from replicatedhq/dexhorthy-create-help-2
8d78aab Merge pull request #23 from mdaniel/no-more-tmpdir
cdbd5cb Update release_create.go
3507c1b Fix a very, very silly tar typo
6624141 Fix extended grep on debian
a6ecc4c Clean up the install.sh
de42484 Merge pull request #21 from kichik/patch-2
95331f5 fix download url