Add space-id and environment-id env vars to readme

Author: talend-deploy

README.md

@@ -82,8 +82,8 @@ used to keep track of the current state of each managed content type.
   Options:
 
     -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
-    -s, --space-id [space-id]          space id to use
-    -e, --environment-id [env-id]      id of the environment within the space (default 'master')
+    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
+    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')
 ```
 
 If the target space already has been init'd before, it will throw an error:
@@ -101,8 +101,8 @@ Note: It will delete any existing migration scripts and create a consolidated on
   Options:
 
     -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
-    -s, --space-id [space-id]          space id to use
-    -e, --environment-id [env-id]      id of the environment within the space (default 'master')
+    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
+    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')
     -c, --content-type [content-type]  one or more content type to bootstrap with choice to overwrite migration state
     -a, --all                          apply bootstrap to all with choice to overwrite migration state
 ```
@@ -135,8 +135,8 @@ applied and when.
   Options:
 
     -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
-    -s, --space-id [space-id]          space id to use
-    -e, --environment-id [env-id]      id of the environment within the space (default 'master')
+    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
+    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')
     -c, --content-type [content-type]  one or more content type names to list
     -a, --all                          lists migrations for all content types
 ```
@@ -167,8 +167,8 @@ the specified content-type into the specified space.
   Options:
 
     -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
-    -s, --space-id [space-id]          space id to use
-    -e, --environment-id [env-id]      id of the environment within the space (default 'master')
+    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
+    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')
     -c, --content-type [content-type]  one or more content type names to process
     -a, --all                          processes migrations for all content types
     -d, --dry-run                      only shows the plan, don't write anything to contentful. defaults to false
@@ -191,8 +191,8 @@ for the specified content-type from the specified space.
   Options:
 
     -t, --access-token [access-token]  CMA token, defaults to your environment variable CONTENTFUL_MANAGEMENT_ACCESS_TOKEN if empty
-    -s, --space-id [space-id]          space id to use
-    -e, --environment-id [env-id]      id of the environment within the space (default 'master')
+    -s, --space-id [space-id]          space id to use (defaults to environment variable CONTENTFUL_SPACE_ID)
+    -e, --environment-id [env-id]      id of the environment within the space (defaults to environment variable CONTENTFUL_ENV_ID if set, otherwise defaults to 'master')
     -c, --content-type [content-type]  content type name
     -d, --dry-run                      only shows the plan, don't write anything to contentful. defaults to false
 ```