Added README and Contribution Guide

Author: bhermann

CONTRIBUTING.md

@@ -0,0 +1,22 @@
+# Contribution Guide
+
+We follow the GitHub [Fork & Pull][forkandpull] and [Git Flow][gitflow] workflow in this project.
+Please fork the official repository, develop in a branch based on the
+current develop branch, and submit a pull request (PR) after you are done.
+
+[forkandpull]: https://help.github.com/articles/about-pull-requests/
+[gitflow]: http://nvie.com/posts/a-successful-git-branching-model/
+
+## Checklist before submitting a Pull Request
+
+Before you submit your PR, please go through this list and check if
+your request fulfills these points.
+
+- Do you have more changes/additions/deletions in your PR than you expected?
+- Do you have tests for your changes?
+- Do all tests of the project succeed?
+- Is your pull request based on the `develop` branch? [(cf. GitFlow)][gitflow]
+
+If you check these items before, your pull request is more likely to be
+included into the project quickly.
+

README.md

@@ -0,0 +1,68 @@
+# Delphi Command-Line Interface (CLI)
+
+The command-line interface for the Delphi platform.
+
+We are currently in pre-alpha state! There is no release and the code in
+this repository is purely experimental!
+
+|branch | status | codacy |
+| :---: | :---: | :---: |
+| master | <img src="https://travis-ci.org/delphi-hub/delphi-cli.svg?branch=master"> | [![Codacy Badge](https://api.codacy.com/project/badge/Grade/9f94d02785594f35be1c6d0d9acba9e9)](https://www.codacy.com/app/bhermann/delphi-cli?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=delphi-hub/delphi-cli&amp;utm_campaign=Badge_Grade)|
+| develop | <img src="https://travis-ci.org/delphi-hub/delphi-cli.svg?branch=develop"> | |
+
+## What is the Delphi Command-Line Interface?
+
+The Delphi CLI is a tool to access the data on the Delphi platform.
+It enables you to search for items matching a query or to inspect a dataset for an item in detail.
+It can be used in an automated context to automatically construct fitting item sets.
+
+## How does it work?
+
+The Delphi CLI checks the provided query and passes it on to the web API of the configured platform.
+The results are printed to the console by default.
+
+## How can I use it?
+
+The Delphi CLI is running on the Java Virtual Machine.
+We require a Java Runtime Environment (JRE) in version 8 or newer.
+
+Our software is available as a binary release on [GitHub](https://github.com/delphi-hub/delphi-cli/releases).
+
+```
+$ delphi-cli --help
+Delphi Command Line Tool (1.0.0-SNAPSHOT)
+Usage: delphi-cli [test|search|retrieve] [options]
+
+  --version         Prints the version of the command line tool.
+  --help            Prints this help text.
+  --server <value>  The url to the Delphi server
+```
+By default the command-line tool uses the official Delphi server at https://delphi.cs.uni-paderborn.de to process queries.
+You can override this setting using the `--server` option or by setting the `DELPHI_SERVER` environment variable.
+
+## Community
+
+Feel welcome to join our chatroom on Gitter: [![Join the chat at https://gitter.im/delphi-hub/delphi](https://badges.gitter.im/delphi-hub/delphi.svg)](https://gitter.im/delphi-hub/delphi?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+
+## Contributing
+
+Contributions are *very* welcome!
+
+Before contributing, please read our [Code of Conduct](CODE_OF_CONDUCT.md).
+
+Refer to the [Contribution Guide](CONTRIBUTING.md) for details about the workflow.
+We use Pull Requests to collect contributions. Especially look out for "help wanted" issues
+[![GitHub issues by-label](https://img.shields.io/github/issues/delphi-hub/delphi-cli/help%20wanted.svg)](https://github.com/delphi-hub/delphi-cli/issues?q=is%3Aopen+is%3Aissue+label%3A%22help+wanted%22),
+but feel free to work on other issues as well.
+You can ask for clarification in the issues directly, or use our Gitter
+chat for a more interactive experience.
+
+[![GitHub issues](https://img.shields.io/github/issues/delphi-hub/delphi-cli.svg)](https://github.com/delphi-hub/delphi-cli/issues)
+
+
+## License
+
+The Delphi CLI is open source and available under Apache 2 License.
+
+[![GitHub license](https://img.shields.io/github/license/delphi-hub/delphi-cli.svg)](https://github.com/delphi-hub/delphi-cli/blob/master/LICENSE)

src/main/scala/de/upb/cs/swt/delphi/cli/Config.scala

@@ -6,6 +6,6 @@ package de.upb.cs.swt.delphi.cli
   * @param verbose Marker if logging should be verbose
   * @param mode The command to be run
   */
-case class Config (server : String = sys.env.getOrElse("DELPHI_SERVER", ""), verbose: Boolean = false, mode : String = "") {
+case class Config (server : String = sys.env.getOrElse("DELPHI_SERVER", "https://delphi.cs.uni-paderborn.de/api/"), verbose: Boolean = false, mode : String = "") {
 
 }