Add development environment instructions

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
Merge pull request #229 from dave-tucker/dev_enviroment

Add development environment instructions
Fix an endian bug for the ioctl argument

Signed-off-by: Yohei Ueda <yohei@jp.ibm.com>
Merge pull request #231 from yoheiueda/fix-ioctl-endian-issue

Fix an endian bug for the ioctl argument
Rename the file as per github convention.

Docker-DCO-1.1-Signed-off-by: Mrunal Patel <mrunalp@gmail.com> (github: mrunalp)
Merge pull request #234 from mrunalp/move_contributors_file

Rename the file as per github convention.
Added support for Libseccomp syscall filtering

Vendored golang-seccomp bindings for libseccomp added, as is a build dependency
on libseccomp version 2.1 or higher.

Signed-off-by: Matthew Heon <mheon@redhat.com>