Testing infra updates

bin/install.sh

 #!/bin/bash
 
 (
-cd `git rev-parse --show-toplevel`
+cd "$( dirname "${BASH_SOURCE[0]}" )/.."
 pip install -r requirements.txt
 )

bin/runtests.sh

@@ -3,15 +3,15 @@
 unit_test_path=test/unit_tests/
 code_path=api/
 
+cd "$( dirname "${BASH_SOURCE[0]}" )/.."
+
 (
 case "$1-$2" in
   unit-|unit---ci)
-    cd `git rev-parse --show-toplevel`
     PYTHONPATH=. py.test --cov=api --cov-report=term-missing $unit_test_path
     ;;
   unit---watch)
-    cd `git rev-parse --show-toplevel`
-    PYTHONPATH=. ptw $unit_test_path $code_path -- $unit_test_path
+    PYTHONPATH=. ptw $unit_test_path $code_path --poll -- $unit_test_path
     ;;
   integration-|integration---ci|integration---watch)
     echo "Not implemented yet"