Import protowhat bash history functionality

Author: hermansje

docs/reference.rst

@@ -90,6 +90,12 @@ Checking files
 .. autofunction:: pythonwhat.checks.check_wrappers.has_dir
 .. autofunction:: pythonwhat.local.run
 
+Bash history checks
+-------------------
+
+.. automodule:: protowhat.checks.check_bash_history
+    :members:
+
 Electives
 ---------
 

pythonwhat/checks/check_wrappers.py

@@ -1,5 +1,6 @@
 from protowhat.utils import _debug
 from protowhat.checks.check_simple import allow_errors
+from protowhat.checks.check_bash_history import has_command
 from protowhat.checks.check_files import check_file, has_dir
 from pythonwhat.checks.check_funcs import check_part, check_part_index, check_node
 from pythonwhat.checks.has_funcs import has_equal_part
@@ -775,6 +776,8 @@ def rename_function(func, name):
 
 scts["run"] = run
 
+scts["has_command"] = has_command
+
 scts["check_file"] = check_file
 scts["has_dir"] = has_dir