Change list of ignored directories and files

There were some ignored files and directories that were only applicable
to my own development workflow. I've removed those and I will encourage
users to add their prefered values to $HOME/.gitignore_global

.gitignore

@@ -1,5 +1,4 @@
 *.py[cod]
-*.swp
 *.js*
 
 # Packages
@@ -13,16 +12,14 @@ sdist
 develop-eggs
 .installed.cfg
 *.egg-info
+*eggs
 
 # ?
 .cache
 
 # venv
 venv
 
-# ipython notebooks
-notebooks
-
 # tox
 .tox
 
@@ -32,3 +29,4 @@ _build
 # coverage
 .coverage
 .idea
+htmlcov