Minor housekeeping

Made makefile select 'python2' via env for portability. Added vim
.sw[op] files to .gitignore. Added a TODO list.

.gitignore

@@ -5,3 +5,4 @@ build
 dist
 ino.egg-info
 doc/.build
+.*.sw[op]

Makefile

@@ -9,7 +9,7 @@ doc:
 	$(MAKE) -f doc/Makefile html
 
 install:
-	python setup.py install --root $(DESTDIR) --prefix $(PREFIX) --exec-prefix $(PREFIX)
+	env python2 setup.py install --root $(DESTDIR) --prefix $(PREFIX) --exec-prefix $(PREFIX)
 
 .PHONY : doc
 .PHONY : install

TODO

@@ -0,0 +1,11 @@
+# ino TODO list:
+
+- Make 'ino build' sensitive to changes all kinds of changes to arguments, so
+  that whenever, for instance, '--cppflags' changes, the code is
+  _automatically_ recompiled with the new options (rather than having to
+  manually invoke 'ino clean' as currently)
+- For completeness, add --arflags and --objcopyflags in build.py
+  * Also create similar flags for all modules, so every program used by ino can
+    be specified (e.g. for 'ino serial')
+
+<!-- vim: set ft=markdown: -->