Update binaries.rst

Along with the kernel requirement, you need a working copy of lxc.  When trying to start using "/docker -d", received error 'initapi: exec: "lxc-start": executable file not found in $PATH'
Update docker_remote_api.rst to reflect that the latest remote API version is 1.8
Merge pull request #3250 from vincentwoo/patch-1

Update docker_remote_api.rst to reflect that the latest remote API version is 1.8
Merge pull request #3228 from maztaim/patch-1

Update binaries.rst