README update

README.md

@@ -10,18 +10,25 @@ An entire column may be block selected (`Select column`), which enables complex
 
 The plugin includes a command to clean up empty trailing commas from rows, which are often left when opening a CSV file in Excel.
 
-When the NumPy package is installed into one of Sublime Text 3's package directories, the plugin supports evaluating Python expressions over ranges of cells, in a manner similar to formulas in Excel. 
+With NumPy (http://www.numpy.org) installed into one of Sublime Text's package directories (or using TinyNumPy when NumPy is unavailable), the plugin supports evaluating Python expressions over ranges of cells, in a manner similar to formulas in Excel. 
 
 All the above features work in both justified and collapsed modes.
 
 Finally, the plugin has full support for RFC 4180 quoting.
 
 ## Install
 
-The files can be obtained on github:
+The files can be obtained on GitHub:
 
     $ https://github.com/wadetb/Sublime-Text-Advanced-CSV
 
+Or via Package Control (https://sublime.wbond.net):
+
+	1. Use the *Package Control: Install Package* command from the command palette.
+	2. A list of packages will appear.  Type `Advanced CSV` and press enter.
+
+Using Package Control ensures that the Advanced CSV plugin stays up to date.
+
 ## Key bindings
 
 Key                  | Action
@@ -135,7 +142,9 @@ Note that it must be evaluated (`Ctrl+Comma, Equals`) twice to calculate the las
 
 ### Installation
 
-To use formulas, you must install the Python NumPy package into your Sublime Text Packages directory.
+If NumPy is installed into a directory visible from Sublime Text's embedded Python interpreter, it will be used for expression evaluation.  Otherwise, an included copy of TinyNumPy is used.  For information about the features and limitations of TinyNumPy, see https://github.com/wadetb/tinynumpy.
+
+To install full NumPy, you must install the Python NumPy package into Sublime Text's Packages directory.
 
 1. Visit https://pypi.python.org/pypi/numpy and download the Python 3.3 `*.whl` file for your system.  
 2. Rename the `.whl` file with a `.zip` extension, and extract it to your computer.