build for scala 2.11
Added `import net.liftweb.util.Vendor._` to bring
an implicit into scope. Fixes a compiler error in 2.11.1
we may as well build using 2.11.1 and 2.10.4 (latest as of today)
Merge pull request #3 from liftmodules/diego_scala_2.11

build for scala 2.11