Update CLI docs and document vocab command

website/api/_top-level/_cli.jade

@@ -34,6 +34,13 @@ p
         +cell flag
         +cell Show help message and available arguments.
 
+    +row("foot")
+        +cell creates
+        +cell directory, symlink
+        +cell
+            |  The installed model package in your #[code site-packages]
+            |  directory and a shortcut link as a symlink in #[code spacy/data].
+
 +aside("Downloading best practices")
     |  The #[code download] command is mostly intended as a convenient,
     |  interactive wrapper – it performs compatibility checks and prints
@@ -86,6 +93,13 @@ p
         +cell flag
         +cell Show help message and available arguments.
 
+    +row("foot")
+        +cell creates
+        +cell symlink
+        +cell
+            |  A shortcut link of the given name as a symlink in
+            |  #[code spacy/data].
+
 +h(3, "info") Info
 
 p
@@ -113,6 +127,11 @@ p
         +cell flag
         +cell Show help message and available arguments.
 
+    +row("foot")
+        +cell prints
+        +cell #[code stdout]
+        +cell Information about your spaCy installation.
+
 +h(3, "validate") Validate
     +tag-new(2)
 
@@ -129,6 +148,12 @@ p
 +code(false, "bash", "$").
     spacy validate
 
++table(["Argument", "Type", "Description"])
+    +row("foot")
+        +cell prints
+        +cell #[code stdout]
+        +cell Details about the compatibility of your installed models.
+
 +h(3, "convert") Convert
 
 p
@@ -172,6 +197,11 @@ p
         +cell flag
         +cell Show help message and available arguments.
 
+    +row("foot")
+        +cell creates
+        +cell JSON
+        +cell Data in spaCy's #[+a("/api/annotation#json-input") JSON format].
+
 p The following converters are available:
 
 +table(["ID", "Description"])
@@ -286,6 +316,11 @@ p
         +cell flag
         +cell Show help message and available arguments.
 
+    +row("foot")
+        +cell creates
+        +cell model, pickle
+        +cell A spaCy model on each epoch, and a final #[code .pickle] file.
+
 +h(4, "train-hyperparams") Environment variables for hyperparameters
     +tag-new(2)
 
@@ -395,6 +430,47 @@ p
         +cell Gradient L2 norm constraint.
         +cell #[code 1.0]
 
++h(3, "vocab") Vocab
+    +tag-new(2)
+
+p
+    |  Compile a vocabulary from a #[+a("#") lexicon JSONL] file and optional
+    |  word vectors. Will save out a valid spaCy model that you can load via
+    |  #[+api("spacy#load") #[code spacy.load]] or package using the
+    |  #[+api("cli#package") #[code package]] command.
+
++code(false, "bash", "$").
+    spacy vocab [lang] [output_dir] [lexemes_loc] [vectors_loc]
+
++table(["Argument", "Type", "Description"])
+    +row
+        +cell #[code lang]
+        +cell positional
+        +cell
+            |  Model language
+            |  #[+a("https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes") ISO code],
+            |  e.g. #[code en].
+
+    +row
+        +cell #[code output_dir]
+        +cell positional
+        +cell Model output directory. Will be created if it doesn't exist.
+
+    +row
+        +cell #[code lexemes_loc]
+        +cell positional
+        +cell Location of lexical data in spaCy's #[+a("#") JSONL format].
+
+    +row
+        +cell #[code vectors_loc]
+        +cell positional
+        +cell Optional location of vectors data as numpy #[code .npz] file.
+
+    +row("foot")
+        +cell creates
+        +cell model
+        +cell A spaCy model containing the vocab and vectors.
+
 +h(3, "evaluate") Evaluate
     +tag-new(2)
 
@@ -447,6 +523,11 @@ p
         +cell flag
         +cell Use gold preprocessing.
 
+    +row("foot")
+        +cell prints / creates
+        +cell #[code stdout], HTML
+        +cell Training results and optional displaCy visualizations.
+
 
 +h(3, "package") Package
 
@@ -459,11 +540,19 @@ p
     |  are downloaded from
     |  #[+src(gh("spacy-dev-resources", "templates/model")) GitHub] to make
     |  sure you're always using the latest versions. This means you need to be
-    |  connected to the internet to use this command.
+    |  connected to the internet to use this command. After packaging, you
+    |  can run #[code python setup.py sdist] from the newly created directory
+    |  to turn your model into an installable archive file.
 
 +code(false, "bash", "$", false, false, true).
     spacy package [input_dir] [output_dir] [--meta-path] [--create-meta] [--force]
 
++aside-code("Example", "bash").
+    spacy package /input /output
+    cd /output/en_model-0.0.0
+    python setup.py sdist
+    pip install dist/en_model-0.0.0.tar.gz
+
 +table(["Argument", "Type", "Description"])
     +row
         +cell #[code input_dir]
@@ -497,3 +586,8 @@ p
         +cell #[code --help], #[code -h]
         +cell flag
         +cell Show help message and available arguments.
+
+    +row("foot")
+        +cell creates
+        +cell directory
+        +cell A Python package containing the spaCy model.