Define tests in the opam file

Signed-off-by: John Else <john.else@citrix.com>
Split up the build and install phase in the opam file

Signed-off-by: John Else <john.else@citrix.com>
travis: Use standard skeleton script

Signed-off-by: John Else <john.else@citrix.com>
travis: Make sure the package has its proper name

Signed-off-by: John Else <john.else@citrix.com>