CSS: Set team-image max sizes to align them

Now team images (for example Vaughn's taller image) won't break text
alignment. They'll also be aligned to the center horizontally when
they're smaller than the max width of the parent element.
diff --git a/css/style.css b/css/style.css
index 49fae2a..a897b56 100644
--- a/css/style.css
+++ b/css/style.css
@@ -328,3 +328,8 @@
 .team-links {
 	padding-top: .75em;
 }
+.team-image img {
+  max-width:150px;
+  max-height: 150px;
+  margin:0 auto;
+}
\ No newline at end of file