Update README.md

Author: alexlib

README.md

@@ -3,13 +3,6 @@
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-
-
 
 OpenPIV consists in a Python and Cython modules for scripting and executing the analysis of 
 a set of PIV image pairs. In addition, a Qt graphical user interface is in 
@@ -32,13 +25,10 @@ Click the link - thanks to BinderHub, Jupyter and Conda you can now get it in yo
 
 ## Installing
 
-You can use `conda` : 
-
-    conda install -c openpiv openpiv
-
-Or PyPI: <https://pypi.python.org/pypi/OpenPIV>:
+Use PyPI: <https://pypi.python.org/pypi/OpenPIV>:
 
-    pip install openpiv
+    pip install cython numpy 
+    pip install openpiv --pre
 
 `--pre` because sometimes we push pre-releases