Missing dependencies

[KnutAtteslander]

There are missing dependencies:

> go dep -d ./...
> make build                                                                                                                                                                                                                                                             master [f080756]
GOOS=linux GOARCH=amd64 CGO_ENABLED=1 go build -o webtail
# github.com/prateeknischal/webtail/util
../../prateeknischal/webtail/util/pam_auth.go:8:10: fatal error: security/pam_appl.h: No such file or directory
 #include <security/pam_appl.h>
          ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make: *** [Makefile:13: build] Fehler 2

[prateeknischal]

Please refer to the README.md#build-from-source section. It does mention what to do in such cases.