Fix environmental variable template

Fixes #124

Author: tony

examples/env-variables.json

@@ -1,5 +1,5 @@
 {
-  "before_script": "{MY_ENV_VAR}/test3.sh", 
+  "before_script": "${MY_ENV_VAR}/test3.sh",
   "windows": [
     {
       "panes": [
@@ -8,24 +8,24 @@
             "tail -F /var/log/syslog"
           ]
         }
-      ], 
-      "start_directory": "/var/log", 
+      ],
+      "start_directory": "/var/log",
       "window_name": "editor"
-    }, 
+    },
     {
       "panes": [
         {
           "shell_command": [
-            "htop", 
+            "htop",
             "ls $PWD"
           ]
         }
       ], 
-      "window_name": "logging for {USER}", 
+      "window_name": "logging for {USER}",
       "automatic_rename": true
     }
-  ], 
-  "shell_command_before": "echo {PWD}", 
-  "start_directory": "{PWD}/test", 
-  "session_name": "session - {USER} ({MY_ENV_VAR})"
-}
+  ],
+  "shell_command_before": "echo ${PWD}",
+  "start_directory": "${PWD}/test",
+  "session_name": "session - ${USER} (${MY_ENV_VAR})"
+}

examples/env-variables.yaml

@@ -1,14 +1,14 @@
-start_directory: "{PWD}/test"
-shell_command_before: "echo {PWD}"
-before_script: "{MY_ENV_VAR}/test3.sh"
-session_name: session - {USER} ({MY_ENV_VAR})
+start_directory: "${PWD}/test"
+shell_command_before: "echo ${PWD}"
+before_script: "${MY_ENV_VAR}/test3.sh"
+session_name: session - ${USER} (${MY_ENV_VAR})
 windows:
 - window_name: editor
   panes:
   - shell_command:
     - tail -F /var/log/syslog
   start_directory: /var/log
-- window_name: logging for {USER}
+- window_name: logging for ${USER}
   automatic_rename: true
   panes:
   - shell_command: