Comment more packages to pass go lint

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

progress/humaans.go

@@ -10,16 +10,20 @@ import (
 // Bytes converts a regular int64 to human readable type.
 type Bytes int64
 
+// String returns the string representation of bytes
 func (b Bytes) String() string {
 	return units.CustomSize("%02.1f %s", float64(b), 1024.0, []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"})
 }
 
+// BytesPerSecond is the rate in seconds for byte operations
 type BytesPerSecond int64
 
+// NewBytesPerSecond returns the rate that n bytes were written in the provided duration
 func NewBytesPerSecond(n int64, duration time.Duration) BytesPerSecond {
 	return BytesPerSecond(float64(n) / duration.Seconds())
 }
 
+// String returns the string representation of the rate
 func (bps BytesPerSecond) String() string {
 	return fmt.Sprintf("%v/s", Bytes(bps))
 }