add support for composite_primary_keys

Fix README with correct generator syntax

Fix position option

run rake gem:gemspec to fix binary references

restore PR#50 - see https://github.com/ctran/annotate_models/commit/cfeec96c9ca0fa5035b10be3d73e798cc4fc52f7

Update README.rdoc

Corrected rails generate command to reflect the current generator name: annotate_models:install

Fixed the invalid gemspec error

Add configurable for routes position, ability to remove routes, fix handling of output from newer Rake versions.

(For example, the Zookeeper gem...)