Add kernel patches to add namespace support to binder

Ensure anbox can be properly started by a systemd --user instance

Import helper cmake script to find GMock and GTest on more modern systems

Taken from https://code.launchpad.net/~cmake-extras/cmake-extras/trunk

Some humble suggestions from a lover of language

This gives us all necessary things like DISPLAY or XAUTHORITY within
the environment for a service started by systemd --user

Add in-snap path to nvidia driver binaries to LD_LIBRARY_PATH

Update README.md

Update README.md

Update README.md

A simple statement of what Anbox is.
I'm a newbie. I reckon most people on github aren't. But in the off-chance that the rare newbie visits, I think it's good to have a simple statement about Anbox that a newbie could understand. Hence my suggested change.

Fellow anbox users, do you have a better one-liner that a newbie could understand?

I'm a newbie. I reckon most people on github aren't. But in the off-chance that the rare newbie visits, I think it's good to have a simple statement about Anbox that a newbie could understand. Hence my suggested change.

1. A few people don't know what to do with line 6 (the line I changed). 
See, for example:
https://github.com/anbox/anbox/issues/157
https://github.com/anbox/anbox/issues/159
https://github.com/anbox/anbox/issues/141
https://github.com/anbox/anbox/issues/132


2. Since [anbox system-info] prints the version number, we don't need to ask people to do [anbox version].

3. Changed wordings of the other "section titles".

Migrate most things the anbox-installer did into a debian package

apt clean after package install in clean-build.sh

Hide container-manager command and print out a warning when not called as root

Check for AppArmor support before using aa-exec

Move snapcraft.yaml back to our toplevel directory

Add note for bug reports to check for existing ones

Fix compilation on 17.04.