refactor(2/main) use debugerror

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

# TYPES
# feat
# fix
# docs
# style (formatting, missing semi colons, etc; no code change):
# refactor
# test (adding missing tests, refactoring tests; no production code change)
# chore (updating grunt tasks etc; no production code change)
Signed-off-by: Brian Tiger Chow <brian.holderchow@gmail.com>

cmd/ipfs2/main.go

 package main
 
 import (
-	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -22,7 +21,7 @@ import (
 	daemon "github.com/jbenet/go-ipfs/daemon2"
 	updates "github.com/jbenet/go-ipfs/updates"
 	u "github.com/jbenet/go-ipfs/util"
-	"github.com/jbenet/go-ipfs/util/debugerror"
+	errors "github.com/jbenet/go-ipfs/util/debugerror"
 	elog "github.com/jbenet/go-ipfs/util/elog"
 )
 
@@ -321,7 +320,7 @@ func commandDetails(path []string, root *cmds.Command) (*cmdDetails, error) {
 		var found bool
 		cmd, found = cmd.Subcommands[cmp]
 		if !found {
-			return nil, debugerror.Errorf("subcommand %s should be in root", cmp)
+			return nil, errors.Errorf("subcommand %s should be in root", cmp)
 		}
 
 		if cmdDetails, found := cmdDetailsMap[cmd]; found {