install_helpers: install infoedit from GitHub

This commit also moves repository URL to be the last argument in every git clone command.

refs #3387

Change-Id: I7e90a928ca11a4f67c949fbc10fe1b4f54307dfc
diff --git a/install_helpers/install_repo.py b/install_helpers/install_repo.py
index 10e2dff..1307724 100644
--- a/install_helpers/install_repo.py
+++ b/install_helpers/install_repo.py
@@ -5,7 +5,7 @@
 def run():
     print "\nINSTALLING repo-ng"
     print "***********************"
-    os.system("git clone https://github.com/named-data/repo-ng --depth 1")
+    os.system("git clone --depth 1 https://github.com/named-data/repo-ng")
     os.chdir("repo-ng")
     os.system("./waf distclean")
     os.system("./waf configure")