setup: Minor adjustments (remove license, adjust some text).

* The license is set in the trove classifiers already, and matches the
  LICENSE file, so is not needed as a separate setup key.

* Zulip is typically capitalized, so use Zulip rather than zulip in
  description.

* Use 'Zulip Open Source Project' as the author, like other Zulip PyPI
  packages.

Author: neiljp

setup.py

@@ -52,13 +52,12 @@ def long_description():
 setup(
     name='zulip-term',
     version=ZT_VERSION,
-    description='A terminal-based interface to zulip chat',
+    description='A terminal-based interface to Zulip chat',
     long_description=long_description(),
     long_description_content_type='text/markdown',
     url='https://github.com/zulip/zulip-terminal',
-    author='Zulip',
+    author='Zulip Open Source Project',
     author_email='[email protected]',
-    license='MIT',
     classifiers=[
         'Development Status :: 4 - Beta',