Update .travis.yml to run unit tests on Linux too.
Update .travis.yml to run unit tests on Linux too.

Swinject/Swinject,Swinject/Swinject,yoichitgy/Swinject,Swinject/Swinject,yoichitgy/Swinject,yoichitgy/Swinject,Swinject/Swinject,yoichitgy/Swinject