Install nose and flake8 if not available for running make tasks (#273)

* Install nose and flake8 if not available for running make tasks

* Add `py35` to tox.ini envlist

* Add task `clean-tox` to Makefile

Author: indera

Diff for: .gitignore

@@ -15,3 +15,4 @@ cover/
 venv/
 .tox
 *.egg
+.ropeproject/

Diff for: Makefile

@@ -1,16 +1,19 @@
 .PHONY: lint test coverage clean clean-pyc clean-build docs
 
 lint:
+	@which flake8 || pip install flake8
 	@flake8 flask_oauthlib tests
 
 test:
+	@which nosetests || pip install nose
 	@nosetests -s --nologcapture
 
 coverage:
+	@which nosetests || pip install nose
 	@rm -f .coverage
 	@nosetests --with-coverage --cover-package=flask_oauthlib --cover-html
 
-clean: clean-build clean-pyc clean-docs
+clean: clean-build clean-pyc clean-docs clean-tox
 
 
 clean-build:
@@ -29,5 +32,8 @@ clean-pyc:
 clean-docs:
 	@rm -fr  docs/_build
 
+clean-tox:
+	@rm -rf .tox/
+
 docs:
 	@$(MAKE) -C docs html

Diff for: tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py26,py27,py33,py34,pypy
+envlist = py26,py27,py33,py34,py35,pypy
 
 [testenv]
 deps =