Change README title

Signed-off-by: Daniel Lim Wee Soong <weesoong.lim@gmail.com>

README.rst

diff --git a/README.rst b/README.rst
index b2a5f86..7f43e37 100644
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@@ -1,5 +1,5 @@
-SymbiFlow Verilog to VtR XML (v2x)
-===================================
+Verilog to Routing XML file generation from Verilog (`python-symbiflow-v2x`)
+=============================================================================
 
 
 .. image:: https://readthedocs.org/projects/python-symbiflow-v2x/badge/?version=latest