Improves documentation (#13)

* Documents all env variables and adds an example project

* Adds godoc comments

* Fixed package naming issue

text/random.go

@@ -0,0 +1,15 @@
+package text
+
+import "math/rand"
+
+// RandomString generates a random string of n length. Based on https://stackoverflow.com/a/22892986/1260548
+func RandomString(n int) string {
+	// remove vowels to make it less likely to generate something offensive
+	var letters = []rune("bcdfghjklmnpqrstvwxzBCDFGHJKLMNPQRSTVWXZ")
+
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = letters[rand.Intn(len(letters))]
+	}
+	return string(b)
+}