added some features

- Added `cron` command to run lists with `cron` time specifed
- Changed `-c` flag to `-f` flag for passing config file
- Modified some config keys
  - cmdArgs -> Args
  - Got rid of `hosts.config`
- better SSH handling
  - respects values in config file

.goreleaser.yaml

@@ -14,7 +14,7 @@ archives:
   - format: tar.gz
     # this name template makes the OS and Arch compatible with the results of uname.
     name_template: >-
-      {{ .ProjectName }}_
+      {{ .ProjectName }}_{{ .Version }}_
       {{- title .Os }}_
       {{- if eq .Arch "amd64" }}x86_64
       {{- else if eq .Arch "386" }}i386