Update spec of demo prj.

boards/nucleo-l152re/.spec

@@ -1,4 +1,30 @@
 name = 'NUCLEO-L152RE'
 description = '''
-STM32 Nucleo development board with STM32L152RET6 MCU, supports Arduino
-''' 
+
+<h1 align="center">STM32 NUCLEO-L152RE</h1>
+<p align="center">
+<table border="0" cellpadding="5">
+	<tr>
+		<td rowspan="4"><img src="$path/.image.png"/></td>
+		<td><b>CPU</b></td>
+		<td>ST Microelectronics STM32L152RET6</td>
+	</tr>
+	<tr>
+		<td><b>Clock</b></td>
+		<td>32MHz</td>
+	</tr>
+	<tr>
+		<td><b>Memory</b></td>
+		<td>512kB Flash, 80kB SRAM, 16Kb EEPROM, 128byte Backup register</td>
+	</tr>
+	<tr>
+		<td><b>Peripherals</b></td>
+		<td>timers, ADC, UART, SPI, I&#178;C, CAN, PWM, USB, DMA, SD card connector</td>
+	</tr>
+</table>
+</p>
+<p>
+STM32-NUCLEO; is based on ST Microelectronics STM32L152RE Cortex-M3 CPU. Visit the <a href="http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1847/PF260002?s_searchtype=partnumber">STM32 NUCLEO page</a> for more information.
+</p>
+
+'''