Provide better readme

README.md

@@ -1 +1,55 @@
-# test-coverage-analysis-script
+# test-coverage-analysis-script
+
+Groovy script to print test coverage analysis results from jacoco report to the console.
+
+## Intended use:
+
+Add `jacoco-maven-plugin` and `groovy-maven-plugin` to your pom file:
+
+```xml
+<plugins>
+    <plugin>
+        <groupId>org.jacoco</groupId>
+        <artifactId>jacoco-maven-plugin</artifactId>
+        <version>0.8.5</version>
+        <executions>
+            <execution>
+                <id>prepare-agent</id>
+                <goals>
+                    <goal>prepare-agent</goal>
+                </goals>
+            </execution>
+            <execution>
+                <id>report</id>
+                <phase>test</phase>
+                <goals>
+                    <goal>report</goal>
+                </goals>
+            </execution>
+        </executions>
+    </plugin>
+
+    <plugin>
+        <groupId>org.codehaus.gmaven</groupId>
+        <artifactId>groovy-maven-plugin</artifactId>
+        <version>2.1.1</version>
+        <executions>
+            <execution>
+                <phase>test</phase>
+                <goals>
+                    <goal>execute</goal>
+                </goals>
+                <configuration>
+                    <source>
+                        https://raw.githubusercontent.com/rbkmoney/test-coverage-analysis-script/master/script/TestCoverageAnalysis.groovy
+                    </source>
+                </configuration>
+            </execution>
+        </executions>
+    </plugin>
+</plugins>
+```
+
+Enjoy:
+
+![example.png](image/example.png)