Adds Jenkinsfile

Also fixes some typos

Jenkinsfile

@@ -0,0 +1,24 @@
+pipeline {
+    agent any
+    stages {
+        stage('Build') {
+            steps {
+                echo 'Building...'
+                sh 'mvn clean & mvn validate & mvn compile'
+            }
+        }
+        stage('Test') {
+            steps {
+                echo 'Testing...'
+                sh 'mvn clean & mvn test'
+            }
+        }
+        stage('Deploy') {
+             steps {
+                echo 'Deploying...'
+                sh 'mvn clean & mvn compile & mvn package & mvn verify & mvn install'
+                archiveArtifacts artifacts: '**/target/*.jar', fingerprint: true
+            }
+        }
+    }
+}

README.md

@@ -2,4 +2,4 @@
 A commandline pokemon clone written in java.
 This started as an assignment in computer science, but since it became quite advanced in just one week, I want to see where it might go.
 
-This project has no clear goal, except mimicking the original pokemon games in a commandline interface. It would be interestig if people used this project as a base for custom games. There is still a lot to implement, but if it reaches a near complete stage, it should be possible to create custom types, moves pokemon, trainers, gyms, badges and maps.
+This project has no clear goal, except mimicking the original pokemon games in a commandline interface. It would be interesting if people used this project as a base for custom games. There is still a lot to implement, but if it reaches a near complete stage, it should be possible to create custom types, moves pokemon, trainers, gyms, badges and maps.

docs/issue_template.md

@@ -4,4 +4,4 @@
 
 ### Steps to reproduce the behavior
 
-### Information about java version, enviroment, project branch etc.
+### Information about java version, environment, project branch etc.

src/main/java/items/Item.java

@@ -9,7 +9,7 @@ import java.util.List;
 public abstract class Item {
     final String name;
     final String description;
-    static List<Item> availableItems = new ArrayList<>();
+    static final List<Item> availableItems = new ArrayList<>();
 
     /**
      * Instantiates a new item