Update deps

vendor/github.com/tuvistavie/securerandom/README.md

@@ -0,0 +1,34 @@
+# securerandom
+
+Port of Ruby `securerandom` module for Golang.
+The following functions are implemented.
+
+```go
+func RandomBytes(n int) ([]byte, error)
+func Base64(n int, padded bool) (string, error)
+func UrlSafeBase64(n int, padded bool) (string, error)
+func Hex(n int) (string, error)
+func Uuid() (string, error)
+```
+
+## Sample usage
+
+```go
+package main
+
+import (
+  "fmt"
+  sr "github.com/tuvistavie/securerandom"
+)
+
+func main() {
+  b, _ := sr.Base64(10, true)
+  fmt.Println(b)
+  b, _ = sr.Hex(10)
+  fmt.Println(b)
+  b, _ = sr.Uuid()
+  fmt.Println(b)
+}
+```
+
+For more information, check out the [documentation of the ruby module](http://ruby-doc.org/stdlib-2.1.0/libdoc/securerandom/rdoc/SecureRandom.html).