Merge branch 'pulls/1.1.0/suggest-textextraction' into 'master'

Add composer suggest for document text extraction and searching

To be supported by:
- CWP documentation on implementing document searching (to come)
- CWP core configuration https://gitlab.cwp.govt.nz/cwp/cwp-core/merge_requests/24
- CWP theme update https://gitlab.cwp.govt.nz/cwp-themes/default/merge_requests/79
- CWP documentation update https://gitlab.cwp.govt.nz/cwp/cwp/merge_requests/64

See merge request !22

composer.json

@@ -13,6 +13,9 @@
 	"require-dev": {
 		"cwp/cwp-recipe-basic-dev": "~1.0.6@stable"
 	},
+	"suggest": {
+		"silverstripe/textextraction": "Required for document text searching within CWP"
+	},
 	"config": {
 		"process-timeout": 900
 	},