Added workspace.xml to gitignore (#2)

Author: EntchenEric

.gitignore

@@ -11,6 +11,7 @@ target/
 .idea/jarRepositories.xml
 .idea/compiler.xml
 .idea/libraries/
+.idea/workspace.xml
 *.iws
 *.iml
 *.ipr
@@ -38,4 +39,4 @@ build/
 .vscode/
 
 ### Mac OS ###
-.DS_Store
+.DS_Store