fix(sinon): Add missing License (#123)

Author: JoseLion

packages/sinon/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Stack Builders Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/sinon/README.md

@@ -25,7 +25,7 @@ You can find the full API reference [here](https://stackbuilders.github.io/asser
 
 ## Usage
 
-You just need to load the plugin in a file that runs before the tests execution, like a `setup.ts` or something like that:
+You just need to load the plugin in a file that runs before the test execution, like a `setup.ts` or something like that:
 
 ```ts
 // setup.ts
@@ -59,7 +59,7 @@ expect(spy).toHaveArgs(10, "long-range");
 expect(spy).toThrow();
 ```
 
-The assertions above act over any of the calls made to the spy. You can get more specific matchers if you assert over a single spy call:
+The assertions above act over any of the calls made to the spy. You can get more specific methods if you assert over a single spy call:
 
 ```ts
 import { expect } from "@assertive-ts/core";
@@ -90,15 +90,15 @@ expect(spy)
   .toHaveMessage("Something went wrong...");
 ```
 
-Notice how `call(..)` and `.toBeCalledOnce()` methods return an assertion over the single call, this way you can chain matchers instead of writing more statements.
+Notice how both `.call(..)` and `.toBeCalledOnce()` return an assertion over the single call, this way you can chain methods instead of writing more statements.
 
 ## License
 
 MIT, see [the LICENSE file](https://github.com/stackbuilders/assertive-ts/blob/main/packages/sinon/LICENSE).
 
 ## Contributing
 
-Do you want to contribute to this project? Please take a look at our [contributing guideline](https://github.com/stackbuilders/assertive-ts/blob/main/docs/CONTRIBUTING.md) to know how you can help us build it.
+Do you want to contribute to this project? Please take a look at our [contributing guidelines](https://github.com/stackbuilders/assertive-ts/blob/main/docs/CONTRIBUTING.md) to know how you can help us build it.
 
 ---