README updates

README.txt

@@ -20,42 +20,42 @@ Requirements
 ------------
 
 RTSProfile requires Python 2.7. It will not function with an earlier version of
-Python. It has not been tested with Python 3 and it is likely that several
-changes will be necessary to make it function using this version of Python.
+Python. It has not been tested with Python 3.
+
+Sphinx must be installed to build the documentation.
 
 
 Installation
 ------------
 
 There are several methods of installation available:
 
-1. Download the source from either the repository (see "Repository," below) or
-a source archive, extract it somewhere, and install it into your Python
-distribution:
+1. (Preferred method) Use pip to install the PyPi package.
+
+ a. Install pip if it is not already installed.
+    See https://pip.pypa.io/en/latest/installing/
+
+ b. Execute the following command to install RTSProfile:
+
+    $ pip install rtsprofile
+
+2. Download the source from either the repository (see "Repository," below) or
+   a source archive, extract it somewhere, and install it into your Python
+   distribution:
 
  a. Extract the source, e.g. to a directory /home/blag/src/rtsprofile
 
- b. Run setup.py to install rtsprofile to your default Python installation:
+ b. Run setup.py to install rtsprofile to your default Python installation::
 
     $ python setup.py install
 
- c. If necessary, set environment variables. These should be set by default,
-    but if not you will need to set them yourself. On Windows, you will need to
-    ensure that your Python site-packages directory is in the PYTHONPATH
-    variable and the Python scripts directory is in the PATH variable.
-    Typically, these will be something like C:\Python27\Lib\site-packages\ and
-    C:\Python27\Scripts\, respectively (assuming Python 2.7 installed in
-    C:\Python27\).
-
-2. Use the Windows installer. This will perform the same job as running
-   setup.py (see #1), but saves opening a command prompt. You may still need to
-   add paths to your environment variables (see step c, above).
+3. On Windows, use the Windows installer.
 
 
 Using the library
 -----------------
 
-The library has one main entry point: the RtsProfle class. Create an instance
+The library has one main entry point: the RtsProfile class. Create an instance
 of this class, giving the constructor just one data source. The library will
 parse that source and give you a complete RT System Profile. You can then use
 the properties (they're Python properties, not class methods) to access