IMPROVE packaging and testing

* uses now tox (currently with no tests) on python 2.7 and 3.4
* upgraded setup.py to setuptools

.gitignore

@@ -7,3 +7,7 @@ $~
 
 # temporary data
 temp
+
+# packaging and testing
+.tox/
+*.egg-info/

setup.py

@@ -1,6 +1,35 @@
 #!/usr/bin/python
 
-from distutils.core import setup
+import os
+import sys
+from setuptools import setup
+from setuptools.command.test import test as TestCommand
+
+def read(fname):
+    """read file from same path as setup.py"""
+    return open(os.path.join(os.path.dirname(__file__), fname)).read()
+
+class Tox(TestCommand):
+    user_options = [('tox-args=', 'a', "Arguments to pass to tox")]
+
+    def initialize_options(self):
+        TestCommand.initialize_options(self)
+        self.tox_args = None
+
+    def finalize_options(self):
+        TestCommand.finalize_options(self)
+        self.test_args = []
+        self.test_suite = True
+
+    def run_tests(self):
+        #import here, cause outside the eggs aren't loaded
+        import tox
+        import shlex
+        args = self.tox_args
+        if args:
+            args = shlex.split(self.tox_args)
+        errno = tox.cmdline(args=args)
+        sys.exit(errno)
 
 setup(
     name='escpos',
@@ -9,7 +38,7 @@ setup(
     download_url='https://github.com/manpaz/python-escpos.git',
     description='Python library to manipulate ESC/POS Printers',
     license='GNU GPL v3',
-    long_description=open('README').read(),
+    long_description=read('README'),
     author='Manuel F Martinez',
     author_email='manpaz@bashlinux.com',
     platforms=['linux'],
@@ -32,4 +61,6 @@ setup(
         'qrcode>=4.0',
         'pyserial',
     ],
+    tests_require=['tox'],
+    cmdclass={'test': Tox},
 )

tox.ini

@@ -0,0 +1,7 @@
+[tox]
+envlist = py27, py34
+
+[testenv]
+deps = nose
+       coverage
+# TODO: implement code coverage analysis (and of course tests at first)