Fix vignette building by using static vignettes

CRAN submissions failed because the CRAN process could not build the vignettes, as we did not script the installation of the Python/spaCy/language model process.  The solution was to swtich to static vignettes (built locally) and include them using the R.rsp package.

.Rbuildignore

@@ -1,3 +1,5 @@
+^Meta$
+^doc$
 ^CRAN-RELEASE$
 ^docs$
 ^\.lintr$
@@ -12,7 +14,6 @@
 ^testenv
 ^spacyr/testenv
 ^env
-^vignettes
 ^appveyor\.yml$
 ^tests/misc$
 ^cran-comments\.md$

.gitignore

@@ -1,3 +1,5 @@
+Meta
+doc
 inst/doc
 .Rproj.user
 .Rhistory

DESCRIPTION

@@ -18,14 +18,15 @@ Imports:
     data.table,
     reticulate (>= 1.6)
 Suggests:
-    spelling,
-    rmarkdown,
-    testthat,
     knitr,
-    quanteda
+    quanteda, 
+    R.rsp,
+    rmarkdown,
+    spelling,
+    testthat
 URL: https://spacyr.quanteda.io
 Encoding: UTF-8
 BugReports: https://github.com/quanteda/spacyr/issues
 RoxygenNote: 6.1.1
 Language: en-GB
-VignetteBuilder: knitr
+VignetteBuilder: R.rsp