Add config for v2 sentence transformers and v1 word vectors model, closes #24

Author: davidmezzetti

config/index.v1.yml

@@ -0,0 +1,9 @@
+path: stackexchange-300d.magnitude
+content: True
+objects: True
+quantize: True
+storevectors: True
+scoring:
+  method: bm25
+  k1: 0.1
+pca: 3

config/index.yml

@@ -0,0 +1,18 @@
+path: sentence-transformers/all-MiniLM-L6-v2
+content: True
+objects: True
+quantize: True
+functions:
+  - name: graph
+    function: graph.attribute
+expressions:
+  - name: topic
+    expression: graph(indexid, 'topic')
+  - name: topicrank
+    expression: graph(indexid, 'topicrank')
+graph:
+  limit: 100
+  minscore: 0.2
+  topics:
+    stopwords: 
+      - stackoverflow