put peakutils into requirements.txt

ed95493d · David Keitel · 52c93053 · ed95493d
Commit ed95493d authored Jun 16, 2017 by David Keitel
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,5 +6,4 @@ corner
 dill
 tqdm
 bashplotlib
-
-
+peakutils