Update README.md

README.md

@@ -1,10 +1,10 @@
 # Arith
-A lossy image compression algorithm that utilizes bitpacking.
+A lossy image compression algorithm that utilizes bit packing.
 
-## Installation
+### Installation
 * Unfortunately, it is not possible to run the project on your machine, since the required libraries are hosted in Tufts servers.
 
-## Usage
+### Usage
 * To compress an image, run the executable with appropriate png or pnm image using:
   ```
   40image -c [filename]
@@ -13,12 +13,30 @@ A lossy image compression algorithm that utilizes bitpacking.
   ```
   40image -d [filename]
   ```
-
-## Algorithm
-It is a very algorithm, I recommend to check the [project spec](https://www.cs.tufts.edu/comp/40-2011f/homework/arith.html).
+### Explanation of Files
+* __40image.c__   is the main() in which the program is ran.
 
-## Contributing
+* __compress40__  has the functions for compressing and decompressing, which are
+            called by 40image
 
-* Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
+* __convert__     has functions to convert from rgb space to video space and vice
+            versa.
+
+* __dct__         has functions that transfrom y, pb, pr to dct float values and vice
+versa.
+
+* __quant__       has functions that quantize dct float values into indices and vice
+            versa.
 
+* __wordpack__    has functions that pack quantized dct values into 32-bit codewords
+            and vice versa.
+
+* __bitpack__     has functions that are used by wordpack in order to directly
+            manipulate the bits in a word.
+
+### Algorithm
+It is a very lengthy algorithm, I recommend to check the [project spec](https://www.cs.tufts.edu/comp/40-2011f/homework/arith.html).
+
+### Contributing
+* Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
 * Please make sure to update tests as appropriate.