qloc does a quick line count over files.

Example output for this folder:

extension           files       binary        blank         code
----------------------------------------------------------------
go                      3            0           43          211
                        1            0            5           20
gitignore               1            0            5           19
md                      1            0            1            5
----------------------------------------------------------------
summary                 6            0           54          255

To install:

go get github.com/loov/qloc