Upated readme

README.md

@@ -48,6 +48,7 @@ Install a JDK 8, preferably the Oracle distribution. Set `JDK_HOME` or
 
     $ export JDK_HOME=<your-jdk-dir>
     $ export JAVA_HOME=$JDK_HOME
+    $ pip install setuptools wheel
     $ python setup.py build maven bdist_wheel
 
 On success, the wheel is found in the `dist` directory.
@@ -68,12 +69,14 @@ SDK 7.1::
     > SET DISTUTILS_USE_SDK=1
     > C:\Program Files\Microsoft SDKs\Windows\v7.1\bin\setenv /x64 /release
     > SET JDK_HOME=<your-jdk-dir>
+    > pip install setuptools wheel
     > python setup.py build maven bdist_wheel
 
 With Visual Studio 14 and higher it is much easier::
 
     > SET VS100COMNTOOLS=C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\Tools\
     > SET JDK_HOME=<your-jdk-dir>
+    > pip install setuptools wheel
     > python setup.py build maven bdist_wheel
 
 On success, the wheel can be found in the `dist` directory.