Documentation update

Author: jmesterh

DICOM-ANON/.gitkeep

@@ -22,54 +22,16 @@ A DICOM tag reference can be found [here](https://dicom.innolitics.com/ciods/cr-
 
 ### Requirements
 
-Since we run this tool on MacOS, it requires docker (see below)
+Since we run this tool on MacOS, it requires docker (see below) and the 'make' command from HomeBrew or MacOS command line tools: `xcode-select --install`
 
 ### Installation
 
-First ensure you have the [Oracle JDK v.8](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html) installed. 
-
 Create a clone of this repository on your workstation:
 ```
 git clone --recurse-submodules https://github.com/susom/mirc-ctp.git
 ```
 
-If you do not have the `ant` program installed, install it with [HomeBrew](https://brew.sh/) (which will need to be installed if you haven't done so already)
-
-```
-$ brew install ant
-```
-
-Compile the included DicomAnonymizerTool by typing `ant` at the command prompt:
-
-```
-$ ant
-Buildfile: /Users/jdoe/Projects/mirc-ctp/build.xml
-
-clean:
-
-init:
-     [echo] Time now 15:56:40 PST
-     [echo] ant.java.version = 1.8
-    [mkdir] Created dir: /Users/jdoe/Projects/mirc-ctp/DicomAnonymizerTool/build
-...
-
-```
-
-You should now have a directory called `DAT` which contains the `DicomAnonymizerTool`. You can try running it: 
-
-```
-$ java -jar DAT/DAT.jar
-Usage: java -jar DAT {parameters}
-where:
-  -in {input} specifies the file or directory to be anonymized
-       If {input} is a directory, all files in it and its subdirectories are processed.
-  -out {output} specifies the file or directory in which to store the anonymized file or files.
-...
-```
-
-Now the application needs to be placed in a Docker image. To create the image: 
-
-`docker build -f Dockerfile --pull -t mirc-ctp .` 
+Type `make` and the Docker image should build. 
 
 You can now place some test DICOM studies in the directory `DICOM` and run the shell script which will anonymize the studies (all to the same anonymous MRN and Accession Number) and place them in `DICOM-ANON`
 
@@ -87,8 +49,3 @@ Elapsed time: 0.634
 
 You can now open the DICOM files in `DICOM-ANON` to make sure they work with your intended application.
 
-### Pixel filtering and MacOS 
-
-In order to read DICOM encoded with the JPEG Lossless syntax, you need to have the Java Advanced Imaging ImageIO libraries.
-Unfortunately, these are not available for Mac. To get around this limitation, this application executes within Docker. 
-A Dockerfile is included in this distribution.