Merge pull request #14 from shravani89/test-m1-build

adoption of code for contrail webui from dsetia/devstack
minor README update
update README
Support disabling services from localrc (eg. using disable_service)
Add protobuf compiler and development library dependency
Merge pull request #15 from Doude/add_protobuf_compiler_dependency

Add protobuf compiler dependency
Add Ubuntu ttrusty dependencies to compile Contrail
Merge pull request #16 from Doude/add_trusty_compilation_dependencies

Add Ubuntu ttrusty dependencies to compile Contrail