Go report card fixes

README.md

@@ -1,5 +1,7 @@
 # Jot
 
+[![Build Status](https://travis-ci.org/jotfs/jot.svg?branch=master)](https://travis-ci.org/jotfs/jot) [![Go Report Card](https://goreportcard.com/badge/github.com/jotfs/jot)](https://goreportcard.com/report/github.com/jotfs/jot)
+
 The Go client library for [JotFS](https://github.com/jotfs/jotfs)
 
 ## License

client.go

@@ -126,6 +126,9 @@ func (c *Client) UploadWithContext(ctx context.Context, r io.Reader, dst string,
 	defer os.RemoveAll(dir)
 
 	packer, err := newPacker(dir, packFiles)
+	if err != nil {
+		return FileID{}, fmt.Errorf("creating new packer: %w", err)
+	}
 
 	// Get the chunker options from the server if we haven't done so already
 	if c.opts == nil {

internal/admin/admin.go

@@ -67,6 +67,7 @@ func (c *Client) VacuumStatus(ctx context.Context, id string) (Vacuum, error) {
 	return Vacuum{vacuum.Status, startedAt, completedAt}, nil
 }
 
+// Stats stores the summary statistics of the server.
 type Stats struct {
 	NumFiles        uint64
 	NumFileVersions uint64

packfile.go

@@ -17,7 +17,7 @@ type packfileBuilder struct {
 
 // newPackfileBuilder creates a new packfileBuilder
 func newPackfileBuilder(w io.Writer) (*packfileBuilder, error) {
-	// Send everything writen to the packfile through the hash function
+	// Send everything written to the packfile through the hash function
 	hash := newHash()
 	w = io.MultiWriter(w, hash)
 	wr := &countingWriter{w, 0}