Helper API refactor (#40)

* api cleaup

* updates

* wtf

* updates

* snapshot.

* tweaks

* snapshot

* api tweaks.

* updates

* updates

* updates

* changes.

* updates

* updates

* sequence => seq

* dont need to use curl, just using wget

* fixing examples

util/date_posix.go

@@ -0,0 +1,17 @@
+// +build !windows
+
+package util
+
+import "time"
+
+// Eastern returns the eastern timezone.
+func (d date) Eastern() *time.Location {
+	if _eastern == nil {
+		_easternLock.Lock()
+		defer _easternLock.Unlock()
+		if _eastern == nil {
+			_eastern, _ = time.LoadLocation("America/New_York")
+		}
+	}
+	return _eastern
+}