README.md in prop_check-0.11.1 vs README.md in prop_check-0.12.0

- old
+ new
@@ -22,13 +22,15 @@
 - [x] Testing the library itself (against known 'true' axiomatically correct Ruby code.)
 - [x] Customization of common settings
  - [x] Filtering generators. 
   - [x] Customize the max. of samples to run.
   - [x] Stop after a ludicrous amount of generator runs, to prevent malfunctioning (infinitely looping) generators from blowing up someone's computer.
- - [x] Look into customization of settings from e.g. command line arguments.
+- [x] Look into customization of settings from e.g. command line arguments.
 - [x] Good, unicode-compliant, string generators.
 - [x] Filtering generator outputs.
 - [x] Before/after/around hooks to add setup/teardown logic to be called before/after/around each time a check is run with new data.
+- [x] `#instance` generator to allow the easy creation of generators for custom datatypes.
+- [ ] A usage guide.
 
 # Nice-to-haves
  
 - [x] Basic integration with RSpec. See also https://groups.google.com/forum/#!msg/rspec/U-LmL0OnO-Y/iW_Jcd6JBAAJ for progress on this.
  - [ ] `aggregate` , `resize` and similar generator-modifying calls (c.f. PropEr's variants of these) which will help with introspection/metrics.