Initial QSfera import

Server/vendor/github.com/lestrrat-go/httpcc/README.md

@@ -0,0 +1,35 @@
+httpcc
+======
+
+Parses HTTP/1.1 Cache-Control header, and returns a struct that is convenient
+for the end-user to do what they will with.
+
+# Parsing the HTTP Request
+
+```go
+dir, err := httpcc.ParseRequest(req.Header.Get(`Cache-Control`))
+// dir.MaxAge()       uint64, bool
+// dir.MaxStale()     uint64, bool
+// dir.MinFresh()     uint64, bool
+// dir.NoCache()      bool
+// dir.NoStore()      bool
+// dir.NoTransform()  bool
+// dir.OnlyIfCached() bool
+// dir.Extensions()   map[string]string
+```
+
+# Parsing the HTTP Response
+
+```go
+directives, err := httpcc.ParseResponse(res.Header.Get(`Cache-Control`))
+// dir.MaxAge()         uint64, bool
+// dir.MustRevalidate() bool
+// dir.NoCache()        []string
+// dir.NoStore()        bool
+// dir.NoTransform()    bool
+// dir.Public()         bool
+// dir.Private()        bool
+// dir.SMaxAge()        uint64, bool
+// dir.Extensions()     map[string]string
+```
+