removed --branch dev

Author: dmarx

pyttitools-PYTTI.ipynb

@@ -275,7 +275,7 @@
         "\n",
         "\n",
         "def clone_reqs():\n",
-        "    !git clone --branch dev --recurse-submodules -j8 https://github.com/pytti-tools/pytti-core\n",
+        "    !git clone --recurse-submodules -j8 https://github.com/pytti-tools/pytti-core\n",
         "\n",
         "def flush_reqs():\n",
         "    !rm -r pytti-core\n",