Addressed review comments

Author: jasminefrancisca

dspic33e-ptg-adc/README.md

@@ -18,7 +18,7 @@ to process the acquired signal samples.
 RC6 is toggled in ADC interrupt,and also in PTG Interrupt 0.This is done for understanding.Sample
 timing diagram is shown below.
 
-![image](../images/dspic33e-ptg-adc.jpg)
+![image](../images/dspic33e-ptg-adc.JPG)
 
 This can be reconfigured according to application requirement.
 

dspic33e-pwm-oc-ptg/README.md

@@ -25,7 +25,7 @@ In this example OC2 is configured for 25% duty cycle or 10us .
 
 And the OC1 and OC2 outputs are mapped to RP54,RP55 pin respectively.
 
-![image](../images/dspic33e-pwm-oc-ptg.jpg)
+![image](../images/dspic33e-pwm-oc-ptg.JPG)
 
 This can be reconfigured according to application requirement. 
 

dspic33e-spi-2slaves/README.md

@@ -8,7 +8,7 @@ This code example shows using the SPI module in conjunction with 2 GPIO pins to
 devices.  The concept is that the GPIO are the slave selects for the individual devices, but the SCL, SDI and SDO are shared between the two processors.  
 This is also scalable up to n devices, where your only limitation is the bus bandwidth on the SPI bus and the number of GPIO lines at your disposal.
 
-![image](../images/dspic33e-spi-2slaves.jpg)
+![image](../images/dspic33e-spi-2slaves.JPG)
 
 The code alternates between sending data from one device to another and mixed.
 

dspic33e-spi-framed/README.md

@@ -7,12 +7,12 @@
 This code shows an example of running the SPI module in different modes.  The first mode is for outputting to a
 single device which requires a Framed SPI mode.  
 
-![image](../images/dspic33e-spi-framed-1.jpg)
+![image](../images/dspic33e-spi-framed-1.JPG)
 
 The second example is for a device which can accept a string of clocks,
 but will only respond to the byte after the frame bit.
 
-![image](../images/dspic33e-spi-framed-2.jpg)
+![image](../images/dspic33e-spi-framed-2.JPG)
 
 The code also goes through the 4 combinations of CKP and CKE.
 

dspic33e-spi-no-dma/README.md

@@ -6,7 +6,7 @@
 
 This code example shows using a single SPI module in conjunction with a GPIO to generate an SPI communication that will work with most SPI Slave devices.
 
-![image](../images/dspic33e-spi-no-dma.jpg)
+![image](../images/dspic33e-spi-no-dma.JPG)
 
 The code sends from 00h through FFh and then cycles through again.  A delay was added to permit catching the output on a logic analyzer easier.