Include sleep in tests

Tests aren't passing in Travis because of short timeout. We're
increasing the timeout to make it pass.

Author: thalesmello

test/test_file_search.exp

@@ -5,6 +5,7 @@ source "./test/helpers/setup.exp"
 # searches at the top of the pane
 #--------------------------------
 display_text "/top/of_the/pane/file.txt"
+sleep 0.5
 tmux_ctrl_f
 assert_highlighted "/top/of_the/pane/file.txt" "top of the pane absolute path"
 

test/test_free_search.exp

@@ -133,6 +133,7 @@ assert_on_screen "No results!" "No results is displayed when no results"
 
 new_tmux_pane
 display_text "something2"
+sleep 0.5
 search "something\[\[:digit:]]"
 next_match
 next_match