You can easily attach libraries into your arduino projects using the free visual studio addin. Library files are linked and not copied to the project which means that when libraries are updated your projects are automatically updated.

Clicking the libary button on the tool bar provides a list of installed arduino libraries (core libs only at the moment). Selecting a library from the list automatically adds a new filter folder called "_libraries\Core\<libName>" and links all of the source and header files from the library into the project.

An #include is also automatically added to the open .pde source. Example...