add a make_tox.sh script, so i can set paths for pyenv

Makefile

@@ -1,5 +1,13 @@
-init:
-	pip install -r requirements.txt
+clean:
+	find celigo -name \*.pyc -delete
+	find celigo -name \*__pycache__ -delete
+	rm -rf build-*
+	rm -rf *egg*
+	rm -rf dist
 
-test:
-	tox
+tox: 
+	./make_tox.sh
+
+test-all: tox
+
+all: clean test-all

make_tox.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/bash
+export PYENV_ROOT="$HOME/.pyenv"    
+export PATH="$PYENV_ROOT/bin:$PATH"
+eval "$(pyenv init -)"
+pyenv shell 2.7.11 3.3.6 3.4.4 3.5.1 pypy-5.0.0
+pyenv rehash
+tox

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py33,py34,py35,pypy
+envlist = py27,py33,py34,py35,pypy-5.0.0
 
 [testenv]
 deps=