Fix: typo in README.md (#74)

Author: johnjohndoe

README.md

@@ -53,7 +53,7 @@ following methods:
 
 1. Enable running tests with code coverage
    This is required so that code will be instrumented, but also to tell this plugin to include
-   modules that have at least on of these properties enabled in the final report (or individual
+   modules that have at least one of these properties enabled in the final report (or individual
    reports)
 
    ```groovy
@@ -181,4 +181,4 @@ sure to follow the code-style as found in the rest of the project.
 
 **How to test your changes/additions?**
 The plugin comes with an integration test and unit tests. You can run these tests either by executing
-`./gradlew clean test` or run the test directly from Android Studio (or IntelliJ IDEA).
+`./gradlew clean test` or run the test directly from Android Studio (or IntelliJ IDEA).