Update release details.

Add homepage and description.
Rename darwin to mac.
Create .deb package.
Use .zip for Windows.

.travis.yml

@@ -1,8 +1,12 @@
 language: go
+go_import_path: qvl.io/ghbackup
 go:
-  - 1.7.4
+  - 1.8.1
 os:
   - linux
   - osx
-after_success:
-  test "$TRAVIS_OS_NAME" = "linux" -a -n "$TRAVIS_TAG" && go get github.com/goreleaser/goreleaser && goreleaser
+after_success: |
+  test "$TRAVIS_OS_NAME" = "linux" -a -n "$TRAVIS_TAG" \
+  && gem install fpm  \
+  && go get github.com/goreleaser/goreleaser \
+  && goreleaser

goreleaser.yml

@@ -1,10 +1,28 @@
-brew:
-  github: 
-    owner: qvl
-    name: homebrew-tap
-  folder: Formula
+homepage: &homepage https://qvl.io/ghbackup
+description: &description Embarrassingly simple GitHub backup tool
 build:
   goos:
     - windows
     - darwin
     - linux
+archive:
+  format_overrides:
+    - goos: windows
+      format: zip
+  replacements:
+    darwin: mac
+brew:
+  github:
+    owner: qvl
+    name: homebrew-tap
+  folder: Formula
+  homepage: *homepage
+  description: *description
+fpm:
+  homepage: *homepage
+  description: *description
+  maintainer: Jorin Vogel <[email protected]>
+  license: MIT
+  vendor: GoReleaser
+  formats:
+    - deb