make clean

docs/Makefile

@@ -3,10 +3,10 @@
 
 # You can set these variables from the command line, and also
 # from the environment for the first two.
-SPHINXOPTS    ?=
+SPHINXOPTS	?=
 SPHINXBUILD   ?= sphinx-build
-SOURCEDIR     = source
-BUILDDIR      = build
+SOURCEDIR	 = source
+BUILDDIR	  = build
 
 # Put it first so that "make" without argument is like "make help".
 help:
@@ -18,3 +18,8 @@ help:
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile
 	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+	
+
+clean:
+	rm -rf $(BUILDDIR)/*
+	rm -rf auto_examples/