added link to lec7 material

README.md

@@ -30,7 +30,7 @@ The table below shows the lecture plan for the course. The lecture slides and no
 | 4  |9/4| Battery modeling, [Slides](Lectures/Lec3.pdf)                         | Ex 4, Lab 1 | [BMS I.2](http://mocha-java.uccs.edu/ECE5710/ECE5710-Notes02.pdf)
 | 5   |14/4| State of charge estimation [Slides](Lectures/Lec5.pdf) [Notes](Lectures/Notes5.pdf)               | Ex 5, Lab 2 | [BMS II.3](http://mocha-java.uccs.edu/ECE5720/ECE5720-Notes03.pdf) (3.1-3.3, 3.8, 3.12)
 | 6   |23/4| Battery pack design [Slides](Lectures/Lec6.pdf) [Notes](Lectures/Notes6.pdf)                    | Ex 6,  | EE 8, [BMS II.1](http://mocha-java.uccs.edu/ECE5720/ECE5720-Notes01.pdf)
-| 7   |30/4| Simulation of cells and battery packs <!--[Slides](Lectures/Lec7/Lec7_Slides.pdf)-->    | Ex 7, Lab 3 |  [BMS II.2](http://mocha-java.uccs.edu/ECE5720/ECE5720-Notes02.pdf)
+| 7   |30/4| Simulation of cells and battery packs [Slides](Lectures/Lec7.pdf)    | Ex 7, Lab 3 |  [BMS II.2](http://mocha-java.uccs.edu/ECE5720/ECE5720-Notes02.pdf)
 | 8   |6/5| Electric vehicle application <!--[Slides](Lectures/Lec8/Lec8_Slides.pdf)-->  |Lab 4 | EE 12  
 | 9   |12/5| Cell balancing <!--[Slides](Lectures/Lec9/Lec9_Slides.pdf)-->        | Ex 9 | [BMS II.5](http://mocha-java.uccs.edu/ECE5720/ECE5720-Notes05.pdf) <!--[BMS II.4.1-4.3](Reading_material/04-Battery-Health-Estimation.pdf)-->
 | 10  |20/5| Exam preparation. Possible guest lecture. | Ex 10  | [Exam241218](Exams/exam241218.pdf) <!--[BMS II.6](Reading_material/06-Voltage-Based-Power-Limit-Estimation.pdf)-->