Merge pull request #68 from shahen94/master

recursively create folders before creating file

android/src/main/java/fr/greweb/reactnativeviewshot/RNViewShotModule.java

             if ("file".equals(result)) {
                 if (options.hasKey("path")) {
                     file = new File(options.getString("path"));
+                    file.mkdirs();
                     file.createNewFile();
                 }
                 else {