Add find and findAll API docs

api/collection-find.md

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+---
+layout: api
+title: Collection.find()
+---
+
+# Method
+
+{% apibody %}
+Collection.find(integer | object)
+{% endapibody %}
+
+# Description
+
+Retrieve a single document from a Collection.
+
+The `find` method may be called with either a key-value pair to match against (e.g., `{name: "agatha"}` or an integer (an `id` value to look up).
+
+```
+// get the first message from Bob
+messages.find({from: "bob"});
+
+// get the message with ID 101
+messages.find({id: 1});
+
+// because the id field contains integers, we can use a shorthand
+messages.find(101);
+```
+
+Also see: [Collection.findAll][cfa]
+
+[cfa]: /api/collection-findall/

api/collection-findall.md

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+---
+layout: api
+title: Collection.findAll()
+---
+
+# Method
+
+{% apibody %}
+Collection.findAll(object[, object, ...])
+{% endapibody %}
+
+# Description
+
+Retrieve multiple documents from a Collection.
+
+The `findAll` method can be called with one or more key-value pairs to match against (e.g., `{email: "[email protected]"}`. Every document that matches the pairs will be returned in a list. (If no documents match, an empty list, `[]`, will be returned.)
+
+```
+// get all messages from Bob, Agatha and Dave
+messages.findAll({from: "bob"}, {from: "agatha"}, {from: "dave"});
+
+// get all messages from Jane and all messages with a high priority
+messages.findAll({from: "jane"}, {priority: "high"});
+```
+
+Also see: [Collection.find][cf]
+
+[cf]: /api/collection-find/