Add build status badge

Philipp Alferov · Philipp Alferov · commit ee5f0df74a2d · 2015-09-28T15:20:31.000-04:00
diff --git a/readme.md b/readme.md
@@ -1,4 +1,4 @@
-# array-to-tree
+# array-to-tree [![Build Status](https://travis-ci.org/alferov/array-to-tree.svg?branch=master)](https://travis-ci.org/alferov/array-to-tree)
 
 > Convert a plain array of nodes (with pointers to parent nodes) to a tree.
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# array-to-tree`
	`1`	`+# array-to-tree [![Build Status](https://travis-ci.org/alferov/array-to-tree.svg?branch=master)](https://travis-ci.org/alferov/array-to-tree)`
`2`	`2`
`3`	`3`	`> Convert a plain array of nodes (with pointers to parent nodes) to a tree.`
`4`	`4`