Put argparse.bash on $PATH, not with scripts.

README.rst

@@ -9,8 +9,8 @@ Use Python's argparse module in shell scripts
 
 The function ``argparse`` parses its arguments using
 ``argparse.ArgumentParser``. The command line options are defined in
-the function's stdin. ``argparse.bash`` should be in the same
-directory as a script that uses it.
+the function's stdin. ``argparse.bash`` should be on the $PATH or in
+the current directory.
 
 Python 2.7 or 3.5+ is required. See
 https://docs.python.org/2.7/library/argparse.html for a description of
@@ -28,7 +28,7 @@ Get ``argparse.bash``
   wget https://raw.githubusercontent.com/nhoffman/argparse-bash/master/argparse.bash
   chmod +x argparse.bash
 
-Then move the file into the same directory as any scripts that will use it.
+Then move the file into a directory that is on your $PATH (/usr/local/bin or $HOME/bin).
 
 Alternatively, you can paste the body of the ``argparse()`` function
 into your script (in which case you would of course omit the line
@@ -45,7 +45,7 @@ Here's an example, ``example.sh``
   #!/usr/bin/env bash
 
   ARGPARSE_DESCRIPTION="Sample script description"      # this is optional
-  source $(dirname $0)/argparse.bash || exit 1
+  source argparse.bash || exit 1
   argparse "$@" <<EOF || exit 1
   parser.add_argument('infile')
   parser.add_argument('outfile')
@@ -123,7 +123,7 @@ script template to stdout
   $ ./argparse.bash
   #!/usr/bin/env bash
 
-  source $(dirname $0)/argparse.bash || exit 1
+  source argparse.bash || exit 1
   argparse "$@" <<EOF || exit 1
   parser.add_argument('infile')
   parser.add_argument('-o', '--outfile')

argparse.bash

@@ -75,7 +75,7 @@ if [[ $0 == *argparse.bash ]]; then
     cat <<FOO
 #!/usr/bin/env bash
 
-source \$(dirname \$0)/argparse.bash || exit 1
+source argparse.bash || exit 1
 argparse "\$@" <<EOF || exit 1
 parser.add_argument('infile')
 parser.add_argument('-o', '--outfile')

example.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 ARGPARSE_DESCRIPTION="Sample script description"      # this is optional
-source $(dirname $0)/argparse.bash || exit 1
+source argparse.bash || exit 1
 argparse "$@" <<EOF || exit 1
 parser.add_argument('infile')
 parser.add_argument('outfile')