add steamcmd to packages

.travis.yml

@@ -24,6 +24,7 @@ addons:
     - libcurl4-openssl-dev
     - libdw-dev
     - cmake
+    - steamcmd
 
 jobs:
   include:
@@ -31,13 +32,13 @@ jobs:
       name: "code coverage"
       script: bash tests/tests_kcov.sh; kcov --bash-method=DEBUG coverage tests/tests_mcserver.sh
     - script: bash tests/tests_mcserver.sh
-      name: "Minecraft"      
-    - script: bash tests/tests_jc2server.sh      
+      name: "Minecraft"
+    - script: bash tests/tests_jc2server.sh
       name: "Just Cause 2"
     - script: bash tests/tests_fctrserver.sh
-      name: "Factorio" 
+      name: "Factorio"
     - script: bash tests/tests_ts3server.sh
-      name: "Teamspeak 3"     
+      name: "Teamspeak 3"
     - script: bash tests/tests_defaultcfg/tests_defaultcfg.sh
       name: "_default.cfg checks"
 after_success: