Updates for READE is needed.

[Michael Xin]

It seems that README page is a little bit outdated. Here are two issues that I ran into trying to follow the instructions step by step.

1) For installation, it is needed to add this line to install all required packages:

pip install -r requirements.txt

Otherwise, I was met with various errors such as:
pecan serve config.py
Traceback (most recent call last):
  File "/Users/jian5397/work/anchor/bin/pecan", line 11, in <module>
    sys.exit(CommandRunner.handle_command_line())
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/commands/base.py", line 96, in handle_command_line
    runner.run(sys.argv[1:])
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/commands/base.py", line 91, in run
    self.commands[ns.command_name]().run(ns)
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/commands/serve.py", line 38, in run
    app = self.load_app()
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/commands/base.py", line 162, in load_app
    return load_app(self.args.config_file)
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/core.py", line 219, in load_app
    module = __import__(package_name, fromlist=['app'])
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/anchor/app.py", line 21, in <module>
    import paste
ImportError: No module named paste

2) It seems that it needs CA/root-ca.crt before it can be run. It is better to add it into the documentation. For example,

pecan serve config.py
INFO:anchor:using config: config.json
Traceback (most recent call last):
  File "/Users/jian5397/work/anchor/bin/pecan", line 11, in <module>
    sys.exit(CommandRunner.handle_command_line())
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/commands/base.py", line 96, in handle_command_line
    runner.run(sys.argv[1:])
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/commands/base.py", line 91, in run
    self.commands[ns.command_name]().run(ns)
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/commands/serve.py", line 38, in run
    app = self.load_app()
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/commands/base.py", line 162, in load_app
    return load_app(self.args.config_file)
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/pecan/core.py", line 221, in load_app
    app = module.app.setup_app(_runtime_conf, **kwargs)
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/anchor/app.py", line 158, in setup_app
    validate_config(jsonloader.conf)
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/anchor/app.py", line 82, in validate_config
    _check_file_exists(conf.ca['cert_path'])
  File "/Users/jian5397/work/anchor/lib/python2.7/site-packages/anchor/app.py", line 59, in _check_file_exists
    path)
anchor.app.ConfigValidationException: could not read file: CA/root-ca.crt

[Stanislaw Pitucha (stanislaw-pitucha)]

I believe this has been done in b61edc50200de2a83606ce50a2f0ad40c8c135dc and following commits. Please comment if it's still not clear.