fixed dependencies

vendor/github.com/go-latex/latex/mtex/README.md

@@ -0,0 +1,11 @@
+# mtex
+
+`mtex` provides a Go implementation of a naive LaTeX-like math expression parser and renderer.
+
+## Example
+
+```
+$> mtex-render -font-size=48 -dpi=100 "$\sum\sqrt{\frac{a+b}{2\pi}}\cos\omega\binom{a+b}{\beta}\prod \alpha x\int\frac{\partial x}{x}\hbar$"
+```
+
+![mtex-example](https://github.com/go-latex/latex/raw/master/mtex/testdata/mtex-example.png)