Native Messaging WIP -- developer install docs

Signed-off-by: Bill Erickson <berickxx@gmail.com>

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+= Hatch Developer Install Documentation =
+
+== Build and Test Hatch Java Libs ==
+
+=== Windows ===
+    TODO
+
+=== Linux ===
+
+==== Download JDK 8 ====
+
+1. Go to 
+http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html[oracle.com],
+accept the license, download the Linux .tar.gz file.
+
+2. Extract the file in the Hatch root directory and link it into place.
+
+[source,sh]
+-------------------------------------------------------------------------
+$ tar -zxf jdk*tar.gz
+$ ln -s jdk1.8* jdk1.8
+-------------------------------------------------------------------------
+
+NOTE: We may some day use openjdk, but its JavaFX libs are not ready
+for prime time as of writing.  
+
+==== Download org.json Java JSON Library ====
+
+[source,sh]
+-------------------------------------------------------------------------
+$ mkdir -p lib
+$ cd lib
+$ wget -O json-20160810.jar \
+    'https://search.maven.org/remotecontent?filepath=org/json/json/20160810/json-20160810.jar'
+$ cd ../
+-------------------------------------------------------------------------
+
+==== Compile Hatch Java ====
+
+[source,sh]
+-------------------------------------------------------------------------
+$ ./run.sh compile
+-------------------------------------------------------------------------
+
+==== Test Hatch Java ====
+
+Assuming the Java code compiles OK, this will run a series of tests.
+Not print commands are enabled by default in the tests, but they
+can be added by un-commenting them in 
+src/org/evergreen_ils/hatch/TestHatch.java and recompiling.
+
+[source,sh]
+-------------------------------------------------------------------------
+$ ./run.sh test
+-------------------------------------------------------------------------
+
+== Configure Chrome/Chromium for Native Messaging with Hatch ==
+
+=== Setup Chrome Extension ===
+
+==== Tweak Extension Values ====
+
+Edit extension/app/manifest.json and change the "eg-dev-local" value found 
+here to the hostname of your Evergreen browser client.
+
+[source,js]
+-------------------------------------------------------------------------
+...
+"externally_connectable": {
+  "matches": ["*://eg-dev-local/*"]
+}
+...
+-------------------------------------------------------------------------
+
+==== Install Chrome Extension ====
+
+. Open Chrome and navigate to chrome://extensions
+. Enable "Developer Mode" along the top right of the page.
+. Click the "Load Unpacked Extension..." button.
+. Load the directory at Hatch/extension/app
+
+===== Debugging Chrome Extension =====
+
+ * Click the "Background Page" link to see the exension console.
+ * Use the "Reload" link to apply changes made to the extension 
+   (e.g. main.js).  
+ * See also https://developer.chrome.com/extensions/getstarted
+
+=== Setup Chrome Native Messaging Host ===
+
+==== Linux ====
+
+1. Edit extension/host/org.evergreen_ils.hatch.json and change the "path" value
+to the location of your copy of "start-hatch", found in the root directory
+of the Hatch repository.  The "path" value cannot be a relative path!
+
+2. Copy the host file into Chrome's configuration directory.
+
+For Chrome:
+
+[source,sh]
+-------------------------------------------------------------------------
+$ mkdir -p ~/.config/google-chrome/NativeMessagingHosts/
+$ cp extension/host/org.evergreen_ils.hatch.json \
+    ~/.config/google-chrome/NativeMessagingHosts/
+-------------------------------------------------------------------------
+
+For Chromium:
+[source,sh]
+-------------------------------------------------------------------------
+$ mkdir -p ~/.config/chromium/NativeMessagingHosts/
+$ cp extension/host/org.evergreen_ils.hatch.json \
+    ~/.config/chromium/NativeMessagingHosts/
+-------------------------------------------------------------------------
+
+