Update dependencies

glide.yaml

@@ -1,23 +1,18 @@
 package: github.com/akamai/cli
 import:
+- package: github.com/akamai/cli-common-golang
 - package: github.com/fatih/color
-  version: ^1.4.1
-- package: github.com/mitchellh/go-homedir
-- package: github.com/sergi/go-diff
-  subpackages:
-  - diffmatchpatch
-- package: github.com/urfave/cli
-  version: ^1.19.1
-- package: github.com/yookoala/realpath
-- package: github.com/inconshreveable/go-update
-- package: github.com/briandowns/spinner
-  version: ^1.0.0
-- package: github.com/src-d/go-git
-  version: ^4.0.0
-- package: github.com/mattn/go-isatty
-  version: ^0.0.3
+  version: ^1.6.0
 - package: github.com/go-ini/ini
-  version: ^1.31.1
-- package: github.com/akamai/cli-common-golang
+  version: ^1.34.0
 - package: github.com/google/uuid
   version: ^0.2.0
+- package: github.com/inconshreveable/go-update
+- package: github.com/kardianos/osext
+- package: github.com/mattn/go-isatty
+  version: ^0.0.3
+- package: github.com/mitchellh/go-homedir
+- package: github.com/urfave/cli
+  version: ^1.20.0
+- package: gopkg.in/src-d/go-git.v4
+  version: ^4.2.1