Adds pm rm

cs.go

@@ -0,0 +1,22 @@
+package pm
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strings"
+)
+
+// ParseCS returns a parsed checksum file.
+func ParseCS(f io.Reader) (map[string]string, error) {
+	cs := map[string]string{}
+	s := bufio.NewScanner(f)
+	for s.Scan() {
+		elems := strings.Split(s.Text(), "\t")
+		if len(elems) != 2 {
+			return nil, fmt.Errorf("manifest format error; got %d elements, want 2", len(elems))
+		}
+		cs[elems[1]] = elems[0]
+	}
+	return cs, nil
+}