chore: rename pip package to electrum-purple, entry point to electrum-purple

setup.py

@@ -56,7 +56,7 @@ extras_require['fast'] = extras_require['crypto']
 
 
 setup(
-    name="Electrum",
+    name="electrum-purple",
     version=version.ELECTRUM_VERSION,
     python_requires='>={}'.format(MIN_PYTHON_VERSION),
     install_requires=requirements,
@@ -71,7 +71,7 @@ setup(
     # package_data kwarg lists what gets put in site-packages when pip installing the tar.gz.
     # By specifying include_package_data=True, MANIFEST.in becomes responsible for both.
     include_package_data=True,
-    scripts=['electrum/electrum'],
+    scripts=['electrum-purple'],
     data_files=data_files,
     description="Lightweight Bitcoin Wallet",
     author="Thomas Voegtlin",