Merge pull request #32 from zbrookle/update_documentation

DOC: Update README.md

Author: zbrookle

README.md

@@ -31,20 +31,6 @@ query("""select * from my_table""")
 The package currently only supports pandas but there are plans to support dask and
 rapids in the future.
 
-## Execution plan
-
-### Values of certain "random" variables
-In certain places it was necessary to create functionality that pandas doesn't support
-and in those cases, there may be strange variables that you come across in the
-execution plan.
-
-This is what their values are:
-
-```python
-FALSE_SERIES = Series(data=[False for _ in range(0, dataframe_size)]))
-NONE_SERIES = Series(data=[None for _ in range(0, dataframe_size)]))
-```
-
 ## SQL Syntax
 The sql syntax for dataframe_sql is as follows:
 
@@ -119,11 +105,4 @@ popular SQL data types are not implemented with common names in pandas and other
 dataframe frameworks
 <br>
 **To make this less confusing all data types that are of the same size on the
-backend are grouped together in this list
-
-## Issues that come from Pandas
-
-- No native cross join
-- No rank over(order by ...)
-- No straight aggregation without groupby object
-- ** No pandas date object
+backend are grouped together in this list