Python packaging cleanup

+ Added gitignore
+ Cleaned up mixed tabs/spaces in setup.py

.gitignore

@@ -0,0 +1,4 @@
+*.pyc
+*build/
+*dist/
+*.egg-info*

packages/Python/setup.py

@@ -14,14 +14,14 @@ setup(
     packages=['modern_robotics'],
     classifiers=[
         "Development Status :: 3 - Alpha",
-	"Intended Audience :: Education",
-	"Intended Audience :: Science/Research",
+        "Intended Audience :: Education",
+        "Intended Audience :: Science/Research",
         "License :: OSI Approved :: MIT License",
-	"Natural Language :: English",
-	"Programming Language :: Python :: 2",
-	"Programming Language :: Python :: 3",
-	"Topic :: Education",
-	"Topic :: Scientific/Engineering",
+        "Natural Language :: English",
+        "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 3",
+        "Topic :: Education",
+        "Topic :: Scientific/Engineering",
     ],
     install_requires=[
         'numpy',