EConDec-6: Manage dependencies via Maven (#8)

[issue] How can we enable to run the plug-in in Eclipse without including the .jar libs in the git repo? How can we manage the dependencies via maven for an Eclipse plug-in? [/issue]
[decision] Add maven-dependency-plugin with the copy-dependencies goal to copy the necessary libraries from the .m2 folder to the lib folder! [/decision]

* Add installation description to README

Author: kleebaum

.gitignore

@@ -4,9 +4,8 @@
 target/
 .idea/
 .metadata/
+lib/
 
 # Files
-.settings
 *.iml
-*.class
-.classpath
+*.class

README.md

@@ -4,4 +4,38 @@
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/8e6c96d73a3c4b4aa30d9a2173795233)](https://www.codacy.com/app/UHD/cures-condec-eclipse?utm_source=github.com&utm_medium=referral&utm_content=cures-hub/cures-condec-eclipse&utm_campaign=Badge_Grade)
 [![Codecoverage](https://codecov.io/gh/cures-hub/cures-condec-eclipse/branch/master/graph/badge.svg)](https://codecov.io/gh/cures-hub/cures-condec-eclipse/branch/master)
 
-The CURES ConDec Eclipse plug-in enables the user to capture and explore decision knowledge in Eclipse. Decision knowledge covers knowledge about decisions, the problems they address, solution proposals, their context, and justifications (rationale). The user can capture decision knowledge in code and commit messages and explore relevant knowledge for code. Relevant knowledge is also extracted from the JIRA project.
+The CURES ConDec Eclipse plug-in enables the user to capture and explore decision knowledge in Eclipse. Decision knowledge covers knowledge about decisions, the problems they address, solution proposals, their context, and justifications (rationale). The user can capture decision knowledge in code and commit messages and explore relevant knowledge for code. Relevant knowledge is also extracted from the JIRA project.
+
+## Installation
+
+### Prerequisites
+The following prerequisites are necessary to compile the plug-in from source code:
+- Java 8 JDK
+- [Maven 3](https://maven.apache.org)
+
+### Compilation via Terminal
+The source code can be compiled via terminal.
+Navigate into the cures-condec-eclipse folder and run the following command:
+```
+mvn clean install
+```
+The cures-condec-eclipse.jar file is created in the de.uhd.ifi.se.decision.management.eclipse/target subfolder.
+
+### Download of Precompiled .jar-File
+The precompiled .jar-File for the latest release can be found here: https://github.com/cures-hub/cures-condec-eclipse/releases/latest
+
+### Develop in Eclipse
+To evolve the ConDec Eclipse plug-in, it needs to be imported into Eclipse.
+- [Install Eclipse IDE for RCP and RAP Developers](https://www.eclipse.org/downloads/packages/) and open it.
+- Import the project as an Existing Maven Project.
+- Run *mvn clean install* in the parent project (cures-condec-eclipse folder) to download the necessary dependendencies into the de.uhd.ifi.se.decision.management.eclipse/lib folder.
+- Configure the de.uhd.ifi.se.decision.management.eclipse project: Properties / Java Build Path / Libraries / 
+    - Add JARs... / select all jar-files in the lib folder (if not already included).
+    - Add Library... / select the *Plug-in Dependencies* (if not already included).
+
+### Installation in Eclipse
+- Download or compile the cures-condec-eclipse.jar file.
+- [Install Eclipse](https://www.eclipse.org/downloads/packages/).
+- Navigate to the Eclipse installation folder and copy the cures-condec-eclipse.jar file into the dropins folder (or a similar folder depending on your operation system).
+- Open Eclipse.
+

de.uhd.ifi.se.decision.management.eclipse.tests.report/.settings/org.eclipse.m2e.core.prefs

@@ -0,0 +1,4 @@
+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

de.uhd.ifi.se.decision.management.eclipse.tests/.classpath

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry exported="true" kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="src" path="src/">
+		<attributes>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

de.uhd.ifi.se.decision.management.eclipse.tests/src/de/uhd/ifi/se/decision/management/eclipse/extraction/TestGitClient.java

@@ -22,7 +22,7 @@ public class TestGitClient {
 
 	@Before
 	public void setUp() {
-		new GitClientImpl("C:\\Users\\anja\\Documents\\gits\\theses\\martinseiler\\.git", "HEAD");
+		new GitClientImpl(".git", "HEAD");
 		new File("");
 	}
 
@@ -34,7 +34,7 @@ public void tearDown() {
 	@Ignore
 	public void testMessagesExists() {
 
-		IPath repositoryPathMS = new Path("C:\\Users\\anja\\Documents\\gits\\theses\\martinseiler\\");
+		IPath repositoryPathMS = new Path("");
 
 		GitClient myExtractor = new GitClientImpl(repositoryPathMS + ".git", "HEAD");
 
@@ -57,7 +57,7 @@ public void testMessagesExists() {
 	@Ignore
 	public void testMessagesAndIDExist() {
 
-		IPath repositoryPathMS = new Path("C:\\Users\\anja\\Documents\\gits\\theses\\martinseiler\\");
+		IPath repositoryPathMS = new Path("");
 
 		GitClient myExtractor = new GitClientImpl(repositoryPathMS + ".git", "HEAD");