Add lua api (#2861)

lua/spacevim/api.lua

@@ -2,7 +2,7 @@ local api = {}
 
 
 function api.import(name)
-    
+ return require('spacevim.api.' .. name)   
 end
 
 

lua/spacevim/api/Data/string.lua

@@ -1 +1,20 @@
+
+local str = {}
+
+
+function str.trim(str)
+    return str:match( "^%s*(.-)%s*$" )
+end
+
+
+function str.fill(str, length, ...)
+    if string.len(str) > length then
+    end
+    
+end
+
+
+return str
+
 -- @todo add lua string api
+

lua/spacevim/plugin/flygrep.lua

@@ -0,0 +1,6 @@
+local flygrep = {}
+
+
+function flygrep.open(opt)
+    
+end