diff --git a/README.md b/README.md
index ffb4833..e97ee5c 100644
--- a/README.md
+++ b/README.md
@@ -298,9 +298,8 @@ on your system, Homemaker defines a couple of extra ones for ease of use:
 
     Variant used for task and macro execution.
 
-Environment variables can also be set within tasks block by assigning them to the `envs` variable. The `!` prefix for,
-the first value allows to assign environment variables with the result (output of stdout) of an arbitrary command.
-The example below demonstrates the setting and clearing of environment variables:
+Environment variables can also be set within tasks block by assigning them to the `envs` variable. The example below
+demonstrates the setting and clearing of environment variables:
 
 ```
 [tasks.default]
@@ -308,7 +307,6 @@ The example below demonstrates the setting and clearing of environment variables
         ["MYENV1", "foo"],        # set MYENV1 to foo
         ["MYENV2", "foo", "bar"], # set MYENV2 to foo,bar
         ["MYENV3"],               # clear MYENV3
-        ["MYENV4", "!hostname", "-s"], # set MYENV4 to the output of `hostname -s`
     ]
 ```
 
@@ -521,4 +519,19 @@ provides a more detailed description of what the parameters do.
 
 ## License ##
 
-MIT
+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.