Add initial static-doc to master for proper versioning

docs/checkenv.sh

@@ -0,0 +1,30 @@
+
+# check environment
+
+# common checks 
+
+if [ ! -d "$EVDIR" ]; then
+
+  echo "The evennia dir is not found at $EVDIR.";
+  exit 1
+fi 
+
+if [ ! -d "$EVGAMEDIR" ]; then
+
+    echo "The gamedir is not found at $EVGAMEDIR";
+    exit 1
+fi 
+
+if [ $# -ne 0 ]
+
+  # a multi-version build
+  
+  then 
+
+    if [ -n "$(git status --untracked-files=no --porcelain)" ]; then
+      echo "There are uncommitted changes. Make sure to commit everything in your current branch before doing a multiversion build."
+      exit 1
+    fi
+
+fi
+