[release] v0.2.2 for ayi web sshd

- release for #85

[test] Add go1.11 to travis.yml

[app][web] Use go.ice for ayi web static #15

- the answer for go web framework #15 is I wrote a thin wrapper around
net/http https://github.com/at15/go.ice
- now there are http access log for static files
- `ayi web static` works, can specify port but can't specify dir

[cmd] Add gotmpl to generate code using template

- mainly after https://github.com/benbjohnson/tmpl use go/format
- used by gommon log dyweb/gommon#17 to
generate different log level
- follow go's generated code standard, add special header
- comment out usage of `go.rice` in `Ayi install`

Merge pull request #55 from dyweb/enhancement/command-runner

[Partial] Enhancement/command runner

[app][git][clone] Fix ssh port problem

- for non-default port, ssh:// prefix is required
- default ssh port is 22, not 25 .... /w\

Add doc for util application