Update README.md
Added overloaded ByExampleWhere<T>() method

Added overloaded ByExampleWhere<T>(this IDbConnection dbConn, object
anonType, bool excludeNulls) because OrmLiteQueryTests that used
ByExample were failing.

Passing the excludeNulls all the way allows for the correct sql
statement to be generated.
In this case not having the where clause with null value properties
which is what the test expects anyway.
Merge pull request #295 from madaleno/master

Add overloaded ByExampleWhere<T>() method with excludeNulls parameter
added schema prefix to JoinSqlBuilder for building queries
Merge pull request #297 from Lee337/master

added schema prefix to JoinSqlBuilder for building queries
JoinSqlBuilder - catered for schema escaping
Merge pull request #298 from Lee337/master

JoinSqlBuilder - catered for schema escaping
updated FirebirdTests/SqlServerExpressionsTest

Fixed a typo with SqlServerExpressionsTests folder and project name:
renamed from SqlServerExpressionsTets to SqlServerExpressionsTest.

FirebirdTests updated to use the overloaded ByExample() method with
excludeNulls parameter.

SqlServerTests updated with JoinTest.cs and IgnoreFieldSelectTest.cs
copied from SqlLiteTest.
Merge pull request #299 from madaleno/master

updated FirebirdTests/SqlServerExpressionsTest
Check DoesTableExist correctly when dropping table in OrmLiteWriteExtensions
Removed OrmLiteDropTableTests from project
Merge pull request #302 from yavosh/master

Fix for drop table when using PostgreSqlNamingStrategy
Ensure that no first chance exceptions are thrown by IDbConnection.GetOrdinal
Merge pull request #303 from fvoncina/prevent-first-chance-exceptions

Prevent raising inner exceptions while IDataReader tries to get ordinal for field names.
Re-factor parameterized methods on IOrmLiteDialectProvider to make them fewer and more consistent
Add InsertAndGetLastInsertId and DRY-up GetLastInsertId provider impls
Add InsertParam lastInsertId tests for SqlServer and Sqlite
Added support for NonQuery to get affected rows

- Added support for free text sql statements with optional params which
allows the called to get the number of affected rows. This should be
usable across all databases since it's using the standard
ExecuteNonQuery from IDbCommand.
- Added unit tests for the functionality
Renamed to ExecuteNonQuery to improve readability

- Refactored NonQuery to ExecuteNonQuery so that the implicit meaning of
the method translates in a better understood API.
Merge pull request #304 from devrios/master

Added support for NonQuery to get affected rows