Wrote README to describe how to use this thing. Slight addition to CodeTricks

Author: ashander

CodeTricks.md

@@ -36,9 +36,14 @@ and  `a^2 ` is slower than `a*a`.
 
 Radford Neal [pointed this out](http://radfordneal.wordpress.com/2010/08/19/speeding-up-parentheses-and-lots-more-in-r/) in  R-2.11.1, try testing in R 2.14.1 first.  
 
+Also, although many matrix operations can be performed on `data.frame`, they are _much_ faster when performed on `matrix` data types[^dfmat].
+
+[^dfmat]: need a small example of this
+
+
 ## Compiling code
 
-As of R2.13, the `complile` package lets you compile code into byte for faster processing.  The basic syntax is:
+As of `R` 2.13, the `compiler` package lets you compile code into byte for faster processing.  The basic syntax is:
 
 `compiled.function <- cmpfun(orig.function)`
 

README

@@ -0,0 +1,11 @@
+Welcome to the theory group code tips discussion/repository
+=========
+
+
+What to do next?
+---------
+
+1. browse current tips [above](https://github.com/tbp-code/General-Repository) open a tip by clicking on the file
+2. discuss a new tip by opening an issue [at this link)(https://github.com/organizations/tbp-code/dashboard/issues/repos?direction=desc&state=open)
+
+