Refactor router and storage

* Split and extract data-logic from application level
* Move storage to DeeSee package
* Move router into internal package
* Fix Makefile
* Fix documentation
* Fix tests

pkg/deesee/model.go

@@ -3,6 +3,7 @@ package deesee
 import (
 	"encoding/json"
 	"github.com/eslider/superherohub/pkg/people"
+	"io"
 	"os"
 	"strings"
 )
@@ -52,6 +53,12 @@ func (s *Superhero) Has(power string) bool {
 	return s.SuperPowers.Contains(power)
 }
 
+// Decode JSON superhero
+func (s *Superhero) Decode(reader io.Reader) (err error) {
+	err = json.NewDecoder(reader).Decode(s)
+	return
+}
+
 // IsAcceptable checks if the given power is allowed.
 func IsAcceptable(power string) bool {
 	for _, p := range allowedSuperPowers {