BUGFIX: they are functions, not data attributes

````
In [1]: import psutil

In [2]: p = psutil.Process()

In [3]: p.name?
Type:       instancemethod
String Form:<bound method Process.name of <psutil.Process(pid=16818, name='ipython') at 25689296>>
File:       /home/hvn/python2/local/lib/python2.7/site-packages/psutil/__init__.py
Definition: p.name(self)
Docstring:  The process name. The return value is cached after first call.

In [4]: p.cmdline?
Type:       instancemethod
String Form:<bound method Process.cmdline of <psutil.Process(pid=16818, name='ipython') at 25689296>>
File:       /home/hvn/python2/local/lib/python2.7/site-packages/psutil/__init__.py
Definition: p.cmdline(self)
Docstring:  The command line this process has been called with.

In [5]: p.exe?
Type:       instancemethod
String Form:<bound method Process.exe of <psutil.Process(pid=16818, name='ipython') at 25689296>>
File:       /home/hvn/python2/local/lib/python2.7/site-packages/psutil/__init__.py
Definition: p.exe(self)
Docstring:
The process executable as an absolute path.
May also be an empty string.
The return value is cached after first call.

In [6]: p.pid
Out[6]: 16818


````