Update README.md

RomaTeng · web-flow · commit a9b7f3dbdf50 · 2017-02-20T20:01:07.000+11:00
diff --git a/README.md b/README.md
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 Author: Teng Zhang
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 This code is the general nonlinear least squares optimization for SLAM, that follows the well-known optimization C++ code packages g2o and gtsam styles.
 
 The framework is organized with some necessary warnings for the extension of the new node and new edge.

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`1`	`1`	`Author: Teng Zhang`
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`2`	`3`	`This code is the general nonlinear least squares optimization for SLAM, that follows the well-known optimization C++ code packages g2o and gtsam styles.`
`3`	`4`
`4`	`5`	`The framework is organized with some necessary warnings for the extension of the new node and new edge.`