Script support to add p1 to the list of transforms.
This is useful in the case that a closed-source program is not compiled
with -fstack-protector.

Multiple users can conflict in /tmp/.  This avoids that issue.

Resolve "Docker setup missing from readme"

Closes #41

See merge request !14

o Update to clarify when to use docker vs. source installation. 

o Give pointer to docker setup instructions

Updates for ubuntu20

See merge request !12

Also updated readme to reflect change

Many of the README details and build scripts assumed environment
variables that may not exist in the open source release.
This commit cleans up much of it, and reduces the README to
what's needed.

Update zax_driver.cpp with corrected hammock ranges.

See merge request allnp/zafl_umbrella!10