fix: Use shebang #!/usr/bin/env bash (#418)

Author: hyperupcall

tests/README

@@ -125,10 +125,10 @@ Writing Tests
 -------------
 
 The test script is written as a shell script.  It should start
-with the standard "#!/bin/bash" with copyright notices, and an
+with the standard "#!/usr/bin/env bash" with copyright notices, and an
 assignment to variable 'test_description', like this:
 
-    #!/bin/bash
+    #!/usr/bin/env bash
     #
     # Copyright (c) 2005 Junio C Hamano
     #

tests/actions-test-lib.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 make_dummy_action()
 {

tests/aggregate-results.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 [ "x$TERM" != "xdumb" ] && (
 		export TERM &&

tests/t0000-config.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 test_description='todo.sh configuration file location
 

tests/t0001-null.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 test_description='todo.sh basic null functionality test.
 

tests/t0002-actions.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 test_description='todo.sh actions.d
 

tests/t0100-code-nobacktick.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 test_description='no old-style backtick command substitution
 

tests/t1000-addlist.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 test_description='basic add and list functionality
 

tests/t1010-add-date.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 test_description='test the date on add feature
 

tests/t1020-addtolistfile.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 test_description='basic addto and list functionality