Merge pull request #14 from ctiller/format

.clang-format

include/grpc++/async_server_context.h

include/grpc++/channel_interface.h

include/grpc++/config.h

include/grpc++/credentials.h

include/grpc++/impl/rpc_service_method.h

include/grpc++/status_code_enum.h

include/grpc/byte_buffer.h

include/grpc/byte_buffer_reader.h

include/grpc/grpc.h

include/grpc/status.h

include/grpc/support/alloc.h

include/grpc/support/atm.h

include/grpc/support/atm_gcc_atomic.h

include/grpc/support/atm_gcc_sync.h

include/grpc/support/atm_win32.h

include/grpc/support/cancellable_platform.h

include/grpc/support/cmdline.h

include/grpc/support/histogram.h

include/grpc/support/log.h