updated build script and made script to do all

updated setup.py to use the correct values for the repo and our
package name. Also made script to check if we can build and, if so,
to build and upload our package
made the script executable
Move build script to contrib/
add util to pull down a cert and its fingerprint
add tests to check tls certs and test data
added ssl stripping test
changed util location
updated tls mitm test for code review comments
formatting- removed file header and spacing
updated ssl_strip to require urls with protocol
formatting- adding spacing between code and imports
made stripping conditions more concise
made better var names
Merge pull request #60 from ben-jones/backport_tests

Backport tests
updated to reference primitives, not utils
Merge pull request #61 from ben-jones/backport_tests

updated to reference primitives
Merge branch 'master' into dev
updated setup script with correct entry point
added run functionality to centinel module
changed our entry points

changed our code to use centinel.py and vpn.py as entry points (so
these programs can be accessed as normal binaries on the platform)