fix dot/cos axes in Merge (close #18)

notebooks/core/Merge.ipynb

@@ -720,8 +720,9 @@
   }
  ],
  "metadata": {
+  "anaconda-cloud": {},
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python [default]",
    "language": "python",
    "name": "python3"
   },

src/layers/core/Merge.js

@@ -67,7 +67,7 @@ export default class Merge extends Layer {
         if (this.dotAxes < 0) {
           this.dotAxes = [shapes[0].length + this.dotAxes, shapes[1].length + this.dotAxes]
         } else {
-          this.dotAxes = [this.dotAxes - 1, this.dotAxes - 1]
+          this.dotAxes = [this.dotAxes, this.dotAxes]
         }
       }
       if (shapes[0][this.dotAxes[0]] !== shapes[1][this.dotAxes[1]]) {