* add appveyor, travis, remove libsnark as default, add push to gh
* fix appveyor
* change appveyor to nightly
* use cargo for build job
* change to build everywhere
* update token, reduce targets
* add more targets
* add on liner script
* remove rustc dep
* add need_cmd
* add check cmd
* simple brackets
* use check_cmd for curl
* copy stdlib to OUT_DIR
* ship stdlib in archive
* install stdlib, give PATH hints after build script
* clean
* comment
* scripts: ensure one-liner install script works with FreeBSD
* remove appveyor for now
* clean, remove windows, remove appveyor, remove travis test
* put back cross install
* fix stdlib test generation
* disable tests in travis
* restore test script to prevent tests to run..
* change scripts to keep same behaviour now that libsnark is disabled by default
* update docs with installer
* change docker to dockerhub
* change repo
