Start prompt mode via `topydo prompt`

Add UILoader.py as an entry_point and decide which UI to start from
there.

setup.py

@@ -17,7 +17,7 @@ setup(
         'edit-cmd-tests': ['mock'],
     },
     entry_points= {
-        'console_scripts': ['topydo = topydo.cli.CLI:main'],
+        'console_scripts': ['topydo = topydo.cli.UILoader:main'],
     },
     classifiers = [
         "Development Status :: 4 - Beta",

topydo/cli/UILoader.py

+# Topydo - A todo.txt client written in Python.
+# Copyright (C) 2014 - 2015 Bram Schoenmakers <me@bramschoenmakers.nl>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+""" Entry file for the Python todo.txt CLI. """
+
+import sys
+from topydo.cli.CLI import CLIApplication
+from topydo.cli.Prompt import PromptApplication
+
+def main():
+    """ Main entry point of the CLI. """
+    try:
+        if sys.argv[1] == 'prompt':
+            PromptApplication().run()
+        else:
+            CLIApplication().run()
+    except IndexError:
+        CLIApplication().run()
+
+if __name__ == '__main__':
+    main()