Update README

README.md

@@ -4,7 +4,40 @@
 
 This is a command-line interface to the [Z PL/SQL Analyzer](https://github.com/felipebz/zpa). It is a code analyzer for Oracle PL/SQL and Oracle Forms projects.
 
-The first version will generate a file in the ["Generic Issue Data" format](https://docs.sonarqube.org/latest/analysis/generic-issue/) to use in SonarCloud or in a SonarQube server (as an alternative to the dedicated [Z PL/SQL Analyzer Plugin](https://github.com/felipebz/zpa)).
+## Downloading
 
-See the [demo project on SonarCloud](https://sonarcloud.io/project/issues?id=utPLSQL-zpa-demo&resolved=false)!
-
+Official releases are available for download on the ["Releases" page](https://github.com/felipebz/zpa-cli/releases).
+
+## Requirements
+
+* Java 11 or newer
+
+## Usage
+
+Currently, the zpa-cli supports these options:
+
+* `--sources`: **[required]** Path to the folder containing the files to be analyzed.
+* `--forms-metadata`: Path to the Oracle Forms [metadata file](https://github.com/felipebz/zpa/wiki/Oracle-Forms-support).
+* `--extensions`: File extensions to analyze separated by comma. The default value is `sql,pkg,pks,pkb`.
+* `--output-file`: Path to the output file. The default value is `zpa-issues.json`.
+
+The output file follows the ["Generic Issue Data" format](https://docs.sonarqube.org/latest/analysis/generic-issue/) and it can be used in SonarCloud or in a SonarQube server (as an alternative to the dedicated [Z PL/SQL Analyzer Plugin](https://github.com/felipebz/zpa)).
+
+### Example
+
+Running an analysis:
+
+`./zpa-cli/bin/zpa-cli --sources .`
+
+Then you can send the results to a SonarCloud or SonarQube server setting the `sonar.externalIssuesReportPaths` property:
+
+```
+sonar-scanner 
+  -Dsonar.organization=$SONARCLOUD_ORGANIZATION \
+  -Dsonar.projectKey=myproject \
+  -Dsonar.sources=. \
+  -Dsonar.host.url=https://sonarcloud.io \
+  -Dsonar.externalIssuesReportPaths=zpa-issues.json
+```
+
+Check the [demo project on SonarCloud](https://sonarcloud.io/project/issues?id=utPLSQL-zpa-demo&resolved=false)!