Update Readme.md

Readme.md

@@ -3,14 +3,16 @@
 ## Build Prerequisites
 
 * Working [python](http://python.org/) with either json (2.7+) or simplejson installed
-* [Apache Ant](http://ant.apache.org/) for XPI builds (optional, not required if you only want to develop AntiContainer)
+* Optionally xpisign.py 
 
 ## Development
 
 1. Clone the repository
 2. See [Setting up an extension development environment](https://developer.mozilla.org/en/Setting_up_extension_development_environment).
 3. Create an extension proxy file as described in 2.
 4. Create/update plugins.json: `cd build; python build_plugins.py`
+5. Build an xpi: `build/make.py ac.xpi`
+
 
 ### Creating/Updating plugins
 It is recommended to create and test plugins outside of `plugins/` first. This has the added benefit that changes will take by only closing and opening the Manager window as opposed to restarting the whole browser.
@@ -21,3 +23,11 @@ Currently the documentation about plugins lives at [wiki/Writing plugins](https:
 ### Adding features or developing fixes
 If you'd like to add a new feature or develop a major fix, then please file an issue before.
 This will ensure before you do all the work, that the feature or fix is something we're willing to pull later.
+
+### Protip:
+To forcefully reload the built-in plugins:
+
+1. Set `nglayout.debug.disable_xul_cache` to true
+2. Open the Error/Browser Console
+3. Execute `Components.utils.unload("chrome://dtaac-modules/content/plugins.jsm")`
+4. Re-open the manager window