Adding plugin node-modules-path

If chpwd is changed to a path where any folder within that subpath
contains a node_modules folder, then that path + .bin is added to the
PATH env variable.

The reason for writing this plugin is that I often open up atom directly
from the shell in a directory of interest. If I have flow installed
locally then I have to add the node_modules folder in that path to PATH
before I open up Atom.

plugins/node-modules-path/path_check.py

@@ -0,0 +1,28 @@
+import os
+import sys
+
+def get_subpaths(path):
+    paths = []
+    dirs = path.split('/')[1:]
+
+    for i in range(len(dirs), 0, -1):
+        p = os.path.join(*dirs[0:i])
+        yield p
+
+def has_modules_folder(path):
+    check_path = os.path.join('/', path, 'node_modules')
+    return os.path.exists(check_path) and os.path.isdir(check_path)
+
+def get_closes_path_dir(path):
+    for p in get_subpaths(path):
+        if has_modules_folder(p):
+            return '/' + p
+    return ''
+
+if __name__ == '__main__':
+    if len(sys.argv) == 1:
+        sys.exit(1)
+    else:
+        path = sys.argv[1]
+        print get_closes_path_dir(path)
+        sys.exit(0)