Update README.md

updated todo, new screenshot, etc.

README.md

@@ -1,9 +1,18 @@
-gitfiti _noun_ : carefully crafted graffiti in a github commit history calendar.
+gitfiti _noun_ : Carefully crafted graffiti in a github commit history calendar.  
-<img src='https://raw.github.com/gelstudios/gitfiti/master/pixels-large.png' alt='gitfiti art'/>
 
-`gitfiti.py` is a tool I wrote to decorate your github account's commit history calendar by (blatantly) abusing git.
+An example of gitfiti in the wild:  
+![alt text](https://raw.github.com/gelstudios/gitfiti/master/gitfiti-screenshot.png "screenshot")
 
-I highly recommend that you create a _new_ github repo when using gitfiti.
+`gitfiti.py` is a tool I wrote to decorate your github account's commit history calendar by (blatantly) abusing git's ability to accept commits _in the past_.
+
+How?  `gitfiti.py` generates a bash script: `gitfiti.sh` that makes commits with the GIT_AUTHOR_DATE and GIT_COMMITTER_DATE environment variables set for each targeted pixel.
+
+Since this is likely to clobber repo's history, I highly recommend that you create a _new_ github repo when using gitfiti. Also, the generated bash script assumes you are using public-key authentication with git.
+  
+  
+###Pixel Art:
+![alt text](https://raw.github.com/gelstudios/gitfiti/master/pixels-large.png "pixel art")  
+Included "art" from left to right: kitty, oneup, oneup2, hackerschool, octocat, octocat2
 
 ###Usage:
 1. Create a new github repo to store your handiwork.
@@ -16,11 +25,12 @@ Fortunately if you regret your gitfiti in the morning, removing it is fairly eas
 
 ---
 ####Todo:
-- Remove 'requests' dependency
+- ~~Remove 'requests' dependency~~
 - Web interface
 - Load "art" from a file
 - Load commit content from a file
 - ...
 - Profit?
-
+  
+  
 ![alt text](http://f.cl.ly/items/0J463J0K1N020S1Q3E3l/er-small.png "tiny logo")