README.md: Add entry for cEP-0025

Closes #158

README.md

@@ -21,4 +21,5 @@ in the `cEP-0000.md` document.
 | [cEP-0018](cEP-0018.md) | Integration of ANTLR into coala    | This cEP describes how an API based on ANTLR will be constructed and maintained                                                                                                                                                                       |
 | [cEP-0019](cEP-0019.md) | Meta-review System                 | This cEP describes the details of the process of implementing the meta-review system as a part of the [GSoC'18 project](https://summerofcode.withgoogle.com/projects/#5188493739819008).                                                              |
 | [cEP-0021](cEP-0021.md) | Profile Bears                      | This cEP describes the detailed implementation of a profiling interface as a part of the [GSoC'18 project](https://summerofcode.withgoogle.com/projects/#6109762077327360).                                                                           |
+| [cEP-0025](cEP-0025.md) | Integrate pyflakes AST into coala  | This cEP describes the details of the process of integrating the pyflakes-enhanced-AST into coala as part of [GSoC'18 project](https://summerofcode.withgoogle.com/projects/#5549789140221952).                                                       |
 | [cEP-0027](cEP-0027.md) | coala Bears Testing API            | This cEP describes the implementation process of `BaseTestHelper` class and `GlobalBearTestHelper` class to improve testing API of coala as a part of the [GSoC'18 project](https://summerofcode.withgoogle.com/projects/#6625036551585792).          |