Merge pull request #21 from blrn/master

Encode header fields in lowercase

jwt.go

@@ -1,9 +1,9 @@
 // Package jwt is a barebones JWT implementation that supports just the bare necessities.
 package jwt
 
-// Header containins important information for encrypting / decryting
+// Header contains important information for encrypting / decrypting
 type Header struct {
-	Typ string // Token Type
-	Alg string // Message Authentication Code Algorithm - The issuer can freely set an algorithm to verify the signature on the token. However, some asymmetrical algorithms pose security concerns
-	Cty string // Content Type - This claim should always be JWT
+	Typ string `json:"typ"` // Token Type
+	Alg string `json:"alg"` // Message Authentication Code Algorithm - The issuer can freely set an algorithm to verify the signature on the token. However, some asymmetrical algorithms pose security concerns
+	Cty string `json:"cty"` // Content Type - This claim should always be JWT
 }