add readme and license

LICENSE

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+Copyright (c) 2021 Ryan Barth
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# KDE Activity Browser
+
+Launch a browser dependant on the current KDE activity in use.
+
+## Usage
+
+Before this script will be useful you will first need to setup the KDE
+activities you want to use and create the corresponding browser profiles.
+
+### Creating Profiles
+
+**Firefox**
+Navigate to [about:profiles](about:profiles) and click the "Create a new
+profile" button to create a new profile. After you are done creating profiles
+make sure the global default session is set using the "Set as default profile"
+below the corresponding profile entry.
+
+### Setting the default browser to use
+```
+activity-browser set-default-program firefox
+```
+
+### Setting the profile for the current activity
+To set the profile to use for the activity switch to the activity you want to
+change then open a terminal and run the following command.
+
+```
+activity-browser set-profile firefox work
+```
+
+This will set the Firefox browser to open the `work` profile for this activity
+for now on. You can change the default profile at any time by rerunning the
+command and specifying a different profile to use.
+
+
+### Checking the settings
+In a terminal run `activity-browser show-config` to check the current program
+settings. The default storage location for the config file is
+`$HOME/.config/activity-browser/config.json`
+
+
+### Launching the browser
+Activity browser will use the default browser to launch the profile specified
+for the activity by default. Otherwise it will launch the default browser