Update Docs Makefile (#275)

docs/Makefile

@@ -5,7 +5,7 @@
 # from the environment for the first two.
 SPHINXOPTS    ?=
 SPHINXBUILD   ?= sphinx-build
-SOURCEDIR     = source
+SOURCEDIR     = .
 BUILDDIR      = _build
 
 # Put it first so that "make" without argument is like "make help".

docs/make.bat

@@ -7,7 +7,7 @@ REM Command file for Sphinx documentation
 if "%SPHINXBUILD%" == "" (
 	set SPHINXBUILD=sphinx-build
 )
-set SOURCEDIR=source
+set SOURCEDIR=.
 set BUILDDIR=_build
 
 if "%1" == "" goto help