Update go dependencies

vendor/github.com/yudai/golcs/README.md

@@ -0,0 +1,60 @@
+# Go Longest Common Subsequence (LCS)
+
+[![GoDoc](https://godoc.org/github.com/yudai/golcs?status.svg)][godoc]
+[![MIT License](http://img.shields.io/badge/license-MIT-blue.svg)][license]
+
+[godoc]: https://godoc.org/github.com/yudai/golcs
+[license]: https://github.com/yudai/golcs/blob/master/LICENSE
+
+A package to calculate [LCS](http://en.wikipedia.org/wiki/Longest_common_subsequence_problem) of slices.
+
+## Usage
+
+```sh
+go get github.com/yudai/golcs
+```
+
+```go
+import " github.com/yudai/golcs"
+
+left = []interface{}{1, 2, 5, 3, 1, 1, 5, 8, 3}
+right = []interface{}{1, 2, 3, 3, 4, 4, 5, 1, 6}
+
+lcs := golcs.New(left, right)
+
+lcs.Values()     // LCS values       => []interface{}{1, 2, 5, 1}
+lcs.IndexPairs() // Matched indices  => [{Left: 0, Right: 0}, {Left: 1, Right: 1}, {Left: 2, Right: 6}, {Left: 4, Right: 7}]
+lcs.Length()     // Matched length   => 4
+
+lcs.Table()      // Memo table
+```
+
+All the methods of `Lcs` cache their return values. For example, the memo table is calculated only once and reused when `Values()`, `Length()` and other methods are called.
+
+
+## FAQ
+
+### How can I give `[]byte` values to `Lcs()` as its arguments?
+
+As `[]interface{}` is incompatible with `[]othertype` like `[]byte`, you need to create a `[]interface{}` slice and copy the values in your `[]byte` slice into it. Unfortunately, Go doesn't provide any mesure to cast a slice into `[]interface{}` with zero cost. Your copy costs O(n).
+
+```go
+leftBytes := []byte("TGAGTA")
+left = make([]interface{}, len(leftBytes))
+for i, v := range leftBytes {
+	left[i] = v
+}
+
+rightBytes := []byte("GATA")
+right = make([]interface{}, len(rightBytes))
+for i, v := range rightBytes {
+	right[i] = v
+}
+
+lcs.New(left, right)
+```
+
+
+## LICENSE
+
+The MIT license (See `LICENSE` for detail)